Salamander retinal ganglian cells: morphology influences firing (Sheasby, Fohlmeister 1999)

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Accession:18501
Nerve impulse entrainment and other excitation and passive phenomena are analyzed for a morphologically diverse and exhaustive data set (n=57) of realistic (3-dimensional computer traced) soma-dendritic tree structures of ganglion cells in the tiger salamander (Ambystoma tigrinum) retina.
Reference:
1 . Sheasby BW, Fohlmeister JF (1999) Impulse encoding across the dendritic morphologies of retinal ganglion cells. J Neurophysiol 81:1685-98 [PubMed]
Citations  Citation Browser
Model Information (Click on a link to find other models with that property)
Model Type: Neuron or other electrically excitable cell;
Brain Region(s)/Organism:
Cell Type(s): Retina ganglion GLU cell;
Channel(s): I Na,t; I A; I K; I K,Ca; I Calcium;
Gap Junctions:
Receptor(s):
Gene(s):
Transmitter(s):
Simulation Environment: NEURON;
Model Concept(s): Action Potential Initiation; Activity Patterns; Dendritic Action Potentials; Bursting; Coincidence Detection; Simplified Models; Active Dendrites; Influence of Dendritic Geometry; Detailed Neuronal Models; Axonal Action Potentials; Action Potentials; Calcium dynamics;
Implementer(s): Sheasby, Brent W ;
Search NeuronDB for information about:  Retina ganglion GLU cell; I Na,t; I A; I K; I K,Ca; I Calcium;
/
sheasbyfohlmeister1999
MediumComplex
LWS9287G
lws9287g.asc
lws9287g.hoc
                            
/*----------------------------------------------------------------
%W%  %G%
lws9287g.asc  translated Tue Dec 17 10:31:01 1996 by ntscable 2.0
source file syntax: Eutectic
output file syntax: CABLE
soma: diameter = 14.9169 um  length = 28.7907 um  area = 1349.21 um2
      23 three-D points; 28 outline points numbered 1-28
      outline diameter = 21.8328 um
6 primary neurites
37 branches totaling 3827.15 um in length, 4993.49 um2 in area
1125 tree points translated to 415 segments (1 requested)
Neurites divided into segments of equal dx between adjacent digitized
branch points.
Segment length constrained to be < 10 um.
No. points   1153
No. trees       7
Text  NOT ASSIGNED                                                                                                            

----------------------------------------------------------------*/
					/* create sections */
create    soma,\
          dend1[1],\
          dend2[5],\
          dend3[9],\
          dend4[15],\
          dend5[17],\
          dend6[21]



/*----------------------------------------------------------------*/
proc geometry() { local i, j

						/* soma geometry */
    soma {
        nseg = 1
        pt3dclear()
        for j = 1, fscan() {
            pt3dadd(fscan(),fscan(),fscan(),fscan())
        }
    }

					/* connect primary neurites */
    soma connect dend1[0] (0), 0.5
    soma connect dend2[0] (0), 0.5
    soma connect dend3[0] (0), 0.5
    soma connect dend4[0] (0), 0.5
    soma connect dend5[0] (0), 0.5
    soma connect dend6[0] (0), 0.5


					/* neurite geometry*/
    for i = 0,0 {
        dend1[i] {
            nseg = fscan()
            pt3dclear()
            for j = 1, fscan() {
                pt3dadd(fscan(),fscan(),fscan(),fscan())
            }
        }
    }

    for i = 0,4 {
        dend2[i] {
            nseg = fscan()
            pt3dclear()
            for j = 1, fscan() {
                pt3dadd(fscan(),fscan(),fscan(),fscan())
            }
        }
    }

    for i = 0,8 {
        dend3[i] {
            nseg = fscan()
            pt3dclear()
            for j = 1, fscan() {
                pt3dadd(fscan(),fscan(),fscan(),fscan())
            }
        }
    }

    for i = 0,14 {
        dend4[i] {
            nseg = fscan()
            pt3dclear()
            for j = 1, fscan() {
                pt3dadd(fscan(),fscan(),fscan(),fscan())
            }
        }
    }

    for i = 0,16 {
        dend5[i] {
            nseg = fscan()
            pt3dclear()
            for j = 1, fscan() {
                pt3dadd(fscan(),fscan(),fscan(),fscan())
            }
        }
    }

    for i = 0,20 {
        dend6[i] {
            nseg = fscan()
            pt3dclear()
            for j = 1, fscan() {
                pt3dadd(fscan(),fscan(),fscan(),fscan())
            }
        }
    }



					/* branching topology*/
    for i = 1,0 {
        dend1[fscan()] connect dend1[i] (0), fscan()
    }

    for i = 1,4 {
        dend2[fscan()] connect dend2[i] (0), fscan()
    }

    for i = 1,8 {
        dend3[fscan()] connect dend3[i] (0), fscan()
    }

    for i = 1,14 {
        dend4[fscan()] connect dend4[i] (0), fscan()
    }

    for i = 1,16 {
        dend5[fscan()] connect dend5[i] (0), fscan()
    }

    for i = 1,20 {
        dend6[fscan()] connect dend6[i] (0), fscan()
    }

}

geometry()


SOMA COORDINATES AND DIAMETERS:

    23
     -17       -7      1.5        0
     -17    -8.25      1.5      2.5
     -17      -10        1   6.0828
     -16  -9.3333      1.5   10.667
   -15.5    -8.75      1.5   13.537
   -14.5    -9.25     1.25   16.508
     -14    -9.15     1.25   17.307
     -12    -9.35     1.25   19.306
   -11.5     -9.4     1.25   19.806
    -9.5     -9.8     1.05   21.419
      -9  -9.7812   1.0625   21.592
      -6  -9.4688   1.4375   23.014
    -5.5     -9.5      1.5   23.087
      -3       -9      1.5   22.091
    -1.5  -9.2857      1.5   20.668
       0  -9.5714      1.5   19.247
     0.5      -10      1.5   18.111
     1.5  -10.875     1.25   13.832
     2.5      -11        1   11.045
     2.5      -12      1.5        9
     2.5   -13.25      1.5      6.5
     3.5   -13.75      1.5      2.5
     3.5    -12.5      1.5        0


NEURITE COORDINATES AND DIAMETERS:

    6 24
      -5    -12.5        0      1.3
      -4      -15        0      1.1
      -3    -16.5        0      1.1
    -2.5    -18.5        0      1.1
    -1.5      -20        0      1.1
    -0.5      -22     -0.5      1.1
    -0.5      -25        0      0.9
     1.5      -27        0      0.9
     2.5    -28.5        0      0.9
     3.5    -30.5        0      0.7
     3.5      -33        0      0.7
       3    -34.5     -0.5      0.7
       3      -37       -1      0.5
     5.5    -37.5        0      0.5
       8      -39        0      0.3
     7.5      -41        0      0.3
     6.5      -43     -0.5      0.2
       8    -44.5        0      0.2
    10.5    -44.5        0      0.2
    11.5      -46        0      0.2
      11      -50        0      0.2
    12.5    -54.5     -0.5      0.2
    13.5    -57.5     -0.5      0.2
    15.5      -61     -0.5      0.2

    2 8
   -10.5      -19        4      0.8
     -12      -21        4      0.6
   -14.5    -21.5        4      0.6
     -16      -23        4        1
   -17.5      -25        6        1
   -18.5      -27      5.5      0.8
     -20      -28      7.5      0.8
     -20      -29        7      1.9

    17 37
     -20      -29        7      1.9
   -17.5    -31.5      8.5      0.3
   -14.5    -31.5      8.5      0.3
   -11.5      -29      8.5      0.3
    -9.5    -27.5      8.5      0.2
    -7.5    -25.5      8.5      0.2
    -5.5    -21.5        9      0.2
      -3    -18.5      9.5      0.2
    -1.5    -13.5      9.5      0.2
       2     -9.5      9.5      0.2
     6.5       -6      9.5      0.2
     9.5       -3      9.5      0.2
    14.5     -0.5      9.5      0.2
      17        1      9.5      0.2
    20.5        2      9.5      0.2
      28        2      9.5      0.2
    31.5      2.5        9      0.2
    34.5      3.5        9      0.2
    39.5        5       10      0.2
    44.5      7.5       10      0.2
      49     10.5       10      0.2
      53       13       10      0.2
    56.5     15.5     10.5      0.2
    58.5     19.5       11      0.2
      61     23.5     11.5      0.2
    63.5       27       10      0.2
      66       30     10.5      0.2
      70     35.5      8.5      0.2
    72.5       40        8      0.2
    74.5       43        9      0.2
    77.5     46.5        9      0.2
      80     49.5      8.5      0.1
    83.5     54.5        9      0.1
    85.5     58.5        9      0.1
    87.5     63.5        9      0.1
    89.5     65.5      9.5      0.1
      89     68.5       10      0.1

    1 5
     -20      -29        7      1.9
   -21.5    -29.5        7      0.3
   -23.5    -30.5        7      0.3
   -26.5      -32        7      0.3
   -27.5      -34        8        1

    1 3
   -27.5      -34        8        1
   -27.5    -36.5        7      0.2
   -27.5    -36.5        7      0.2

    6 17
   -27.5      -34        8        1
     -32      -34      7.5      0.2
   -35.5      -33      7.5      0.2
     -38    -31.5      8.5      0.2
     -42      -31      8.5      0.2
     -46    -31.5      8.5      0.2
     -48    -31.5        7      0.2
     -51    -31.5        7      0.2
   -53.5    -31.5        8      0.2
     -57    -31.5      8.5      0.2
     -59    -30.5      7.5      0.2
     -63    -30.5      7.5      0.2
     -66    -29.5      7.5      0.2
     -70      -28      7.5      0.2
     -73      -28      7.5      0.2
   -74.5    -26.5      7.5      0.2
   -75.5    -26.5      7.5      0.2

    5 17
     -12       -8        5      1.3
     -14       -7      7.5      1.3
     -16       -5      6.5      1.7
   -18.5     -3.5      6.5      1.4
     -21       -2        6      1.4
   -21.5        0        6      2.4
   -22.5      3.5      6.5      1.7
     -22        6        8      1.7
     -23      8.5        8      1.7
   -21.5       11        8      1.7
     -23       14        8      1.7
     -26       15        8      1.5
     -29       15        8      1.4
   -31.5     15.5      7.5      1.4
     -34     17.5      6.5      1.4
     -37     18.5        7      1.6
   -39.5       18      6.5      1.9

    1 4
   -39.5       18      6.5      1.9
   -40.5     15.5        6      0.8
   -41.5     13.5        6      0.8
   -43.5       11        6      1.3

    7 25
   -43.5       11        6      1.3
   -43.5      8.5      5.5      0.5
   -43.5      5.5      6.5      0.5
     -43        3      5.5      0.5
   -41.5      0.5      5.5      0.5
     -40       -3      5.5      0.5
     -40     -6.5      5.5      0.5
     -41       -9        5      0.5
     -40      -13        5      0.5
     -40      -16      5.5      0.5
     -41    -18.5      5.5      0.5
     -42      -20      5.5      0.5
   -43.5    -21.5        5      0.5
     -46    -23.5        5      0.5
     -47    -21.5        6      0.5
     -47      -19        6      0.5
     -49      -17        6      0.5
   -50.5      -15      5.5      0.5
   -51.5    -12.5      5.5      0.5
   -52.5      -10      6.5      0.5
     -54       -8      4.5      0.5
     -55     -5.5      4.5      0.5
   -56.5     -3.5      4.5      0.5
     -58     -2.5        4      0.4
   -61.5       -1      4.5      1.3

    7 22
   -61.5       -1      4.5      1.3
     -63     -2.5      4.5      0.3
   -66.5       -2      4.5      0.3
     -68     -3.5      5.5      0.3
     -70     -4.5      5.5      0.3
     -72     -4.5      6.5      0.3
     -74     -4.5        6      0.2
   -76.5     -4.5      7.5      0.2
   -79.5     -4.5      7.5      0.2
   -81.5     -2.5        8      0.2
   -85.5     -2.5        8      0.2
     -88       -3        8      0.2
     -90       -4        9      0.2
     -92       -5        9      0.2
   -96.5       -7      7.5      0.2
   -98.5     -8.5      7.5      0.2
    -104       -7        7      0.2
    -106     -8.5      8.5      0.2
  -110.5       -9        8      0.2
  -111.5    -11.5        8      0.2
  -114.5    -11.5        7      0.2
    -116      -12        7      0.2

    3 10
   -61.5       -1      4.5      1.3
   -62.5        1      3.5      0.3
   -64.5      2.5      3.5      0.3
     -67      4.5      3.5      0.3
   -67.5      7.5      3.5      0.3
     -69      9.5        6      0.3
     -70     12.5        6      0.3
     -71     14.5        6      0.3
     -71       19        6      0.3
   -70.5     19.5      5.5      0.3

    9 26
   -43.5       11        6      1.3
   -46.5       10      5.5      0.4
   -51.5     10.5      5.5      0.4
     -53     11.5      4.5      0.4
     -56       11      4.5      0.4
     -59     11.5      4.5      0.4
     -62     11.5        5      0.4
   -65.5       12        4      0.4
     -68       12        4      0.4
     -73       13      4.5      0.8
   -76.5       14      4.5      0.8
     -78     13.5        5      0.3
   -80.5       13        5      0.3
   -82.5     12.5      5.5      0.3
     -85       13      5.5      0.3
   -87.5       12      5.5      0.3
   -89.5       12        6      0.3
   -93.5       12        6      0.3
     -96       13      6.5      0.2
   -98.5     12.5      6.5      0.2
  -101.5     11.5      6.5      0.2
    -104       10        6      0.2
    -108      7.5        8      0.2
  -111.5        6        8      0.2
    -113        4        7      0.2
  -119.5      3.5      6.5      0.2

    6 14
   -39.5       18      6.5      1.9
   -40.5       20        7      0.8
   -43.5       23        6        1
     -47     24.5      6.5        1
   -52.5     25.5        6        1
     -57       25      5.5        1
   -60.5     24.5        5      0.8
     -66       24      4.5      0.8
     -69     22.5      4.5      0.8
     -73     20.5      4.5      0.8
   -77.5       20        4      0.8
     -82       20        4      0.8
     -85       21        4      0.8
   -86.5     21.5      4.5      1.6

    4 12
   -86.5     21.5      4.5      1.6
   -88.5       20        4      0.2
   -91.5       19        5      0.2
     -95     17.5        5      0.2
     -98     16.5        5      0.2
    -100       16        5      0.2
  -101.5       15        5      0.2
  -103.5     14.5        5      0.2
    -106     14.5        5      0.2
    -111       13        5      0.2
    -114     11.5        5      0.2
  -115.5     11.5        5      0.2

    13 41
   -86.5     21.5      4.5      1.6
   -86.5     24.5      3.5      0.6
     -87     26.5      4.5      0.6
     -89       28      3.5      0.6
     -89     31.5      3.5      0.6
     -90     33.5      3.5      0.6
     -91       36        5      0.6
   -89.5     37.5        4      0.5
     -89     39.5      5.5      0.5
     -89     42.5        5      0.5
   -91.5       44        6      0.5
   -92.5     47.5        5      0.5
   -95.5     47.5        7      0.4
   -96.5       49        7      0.4
    -100     48.5        7      0.4
  -101.5     49.5        7      0.3
  -103.5     50.5        7      0.3
    -106     50.5        7      0.3
  -107.5     52.5        8      0.3
  -110.5     53.5        8      0.3
    -112       54      7.5      0.3
  -113.5       56        8      0.3
  -115.5     55.5        8      0.3
  -116.5       58        7      0.3
    -119       59      6.5      0.3
  -120.5       61      6.5      0.3
  -121.5     62.5      6.5      0.3
  -124.5     62.5        4      0.3
  -123.5       66        4      0.3
    -124     68.5        4      0.3
    -126       71        4      0.3
  -127.5       73        4      0.3
  -129.5       75      4.5      0.3
    -130       79      4.5      0.3
  -125.5     80.5      4.5      0.2
    -123       84      4.5      0.2
    -118     84.5      4.5      0.2
  -115.5       87      4.5      0.2
  -110.5       89      3.5      0.2
  -107.5     92.5        3      0.2
    -107       92        3      0.2

    6 24
   -10.5       -6        4      1.9
     -12     -4.5      3.5      1.8
   -14.5       -3        4        2
   -15.5      0.5      3.5      2.5
     -17      1.5      3.5      2.5
   -19.5        2        3      3.1
     -20      3.5      4.5        2
   -22.5        5      4.5        2
     -25        5        4      1.6
   -26.5        6        4      1.6
   -27.5        8      4.5      1.6
   -29.5      9.5        4      1.6
     -30     12.5      4.5      1.5
   -29.5       15        4      1.5
     -31     16.5        4      1.5
     -33       18        4      1.5
     -34       20        4      1.5
   -34.5       22      4.5      1.5
     -36       24      4.5      1.5
   -37.5     25.5      4.5      1.5
   -39.5       26      4.5      1.5
     -41     28.5        6      1.5
     -43       32        6      1.5
     -44       32      5.5      1.5

    11 35
     -44       32      5.5      1.5
     -45       33        5      0.6
     -47     33.5        6      0.6
     -49     33.5      5.5      0.6
     -51       35        5      0.6
     -53       36        5      0.6
   -57.5     36.5        5      0.6
     -61     37.5        5      0.6
   -62.5     36.5        5      0.6
     -65       37        5      0.6
     -66       38      6.5      0.6
   -68.5     37.5      6.5      0.6
   -72.5       37      6.5      0.6
     -75     36.5        8      0.5
     -76       34        8      0.5
   -77.5       35      8.5      0.4
   -78.5     36.5      7.5      0.4
     -81     34.5        8      0.4
   -83.5     33.5       10      0.4
   -83.5     31.5     10.5      0.4
     -86       32       10      0.3
     -88     33.5       11      0.3
     -91       35       11      0.3
     -94       35       11      0.2
     -96     36.5       10      0.2
   -98.5     37.5       10      0.2
     -99     40.5       10      0.2
  -101.5     40.5       10      0.2
  -104.5       40       10      0.2
    -107       40     10.5      0.2
  -109.5     40.5     10.5      0.2
  -118.5       42      9.5      0.2
  -122.5     40.5      9.5      0.2
  -126.5     38.5      9.5      0.2
    -135       37     11.5      0.2

    3 8
     -44       32      5.5      1.5
   -44.5     35.5        7      1.4
   -46.5     37.5      8.5      1.4
     -49     38.5      8.5      1.4
   -49.5     40.5      7.5      1.4
     -49     43.5        8      1.4
     -50     46.5        8      1.4
   -50.5       49        8      1.4

    2 5
   -50.5       49        8      1.4
   -51.5       51        9      1.2
     -52       54        9      1.2
     -54       55      9.5      1.2
     -55     57.5      7.5      1.2

    3 11
     -55     57.5      7.5      1.2
   -57.5     57.5      9.5      1.2
     -60     57.5      8.5        1
     -63     58.5      8.5        1
     -64     61.5      8.5        1
     -65     62.5      9.5        1
   -67.5       65      8.5        1
   -68.5     66.5        8        1
     -70       69        8        1
     -73       71        8        1
     -75       73      7.5      1.2

    6 16
     -75       73      7.5      1.2
     -77     71.5      8.5      0.3
     -81       73      8.5      0.3
   -86.5       75      8.5      0.3
   -90.5       76        8      0.3
   -91.5       78        9      0.2
   -93.5       82        9      0.2
     -96       84        9      0.2
     -97     86.5        9      0.2
     -97       90        9      0.2
   -98.5     91.5        9      0.2
  -101.5       94        9      0.2
   -97.5     96.5        9      0.2
     -99      100        9      0.2
   -99.5      102        9      0.2
    -100    104.5        9      0.2

    6 20
     -75       73      7.5      1.2
     -74       77      7.5      0.6
   -73.5       81      7.5      0.6
     -73     83.5      7.5      0.6
     -73     86.5        6      0.6
     -71     89.5        7      0.6
     -72       93        7      0.6
     -72       96      6.5      0.6
   -72.5       99      7.5      0.6
     -75    101.5      7.5      0.6
   -75.5    103.5      7.5      0.6
     -75    105.5      7.5      0.6
     -77    107.5      7.5      0.6
   -79.5      109      7.5      0.6
   -82.5      110        7      0.6
     -85      111        7      0.6
   -86.5    112.5        7      0.6
   -88.5      113        7      0.6
   -90.5      114        7      0.6
     -92    113.5        7        1

    2 7
     -92    113.5        7        1
   -94.5    111.5      7.5      0.3
   -97.5    108.5        7      0.3
  -100.5    108.5        7      0.3
    -103      108        6      0.3
    -105      110        6      0.3
    -105      111        6      0.3

    5 15
     -92    113.5        7        1
     -92    116.5        7      0.3
   -95.5      119        8      0.3
     -99      120      7.5      0.3
    -101      122      7.5      0.2
    -101      124      6.5      0.2
    -104    125.5      6.5      0.2
  -107.5    125.5      6.5      0.2
  -107.5    129.5      6.5      0.2
  -107.5      132        7      0.2
    -109      134        7      0.2
  -111.5    136.5        7      0.2
  -113.5      141      6.5      0.2
  -108.5      143      7.5      0.2
    -109      145      7.5      0.2

    14 30
     -55     57.5      7.5      1.2
   -52.5     59.5        8      0.3
     -49       63        7      0.3
   -45.5       66        7      0.3
     -42     71.5        7      0.3
   -39.5       74        7      0.3
     -36     77.5        7      0.3
     -33       80        7      0.3
   -30.5     83.5        8      0.3
     -28     89.5      8.5      0.3
     -24     93.5        9      0.3
     -21       98        8      0.3
   -18.5      100        8      0.3
   -14.5    103.5        8      0.3
   -12.5    107.5      8.5      0.3
     -13    110.5      8.5      0.3
     -11      115      8.5      0.3
    -9.5    117.5      8.5      0.3
      -9      123        9      0.3
    -7.5    126.5        8      0.3
      -6      130        9      0.3
    -2.5      133      9.5      0.3
     1.5      136      9.5      0.3
     5.5    137.5       10      0.2
     8.5      140       10      0.2
    13.5      141       10      0.2
      19    143.5      9.5      0.2
    23.5      144        9      0.2
    27.5      146     10.5      0.2
      27    146.5        8      0.2

    1 4
   -50.5       49        8      1.4
   -46.5       49     10.5      0.4
     -44       50       10      0.4
     -42     50.5      9.5      0.8

    16 40
     -42     50.5      9.5      0.8
   -40.5       53      9.5      0.3
     -37     54.5        9      0.3
     -32       55        8      0.3
   -28.5       55        9      0.3
   -26.5     56.5      9.5      0.3
     -24       58      9.5      0.3
   -22.5     61.5      9.5      0.3
     -20     63.5        9      0.2
     -18     66.5        9      0.2
   -16.5     67.5        9      0.2
     -15       70      8.5      0.2
     -14     71.5      8.5      0.2
   -10.5       74        9      0.2
    -6.5       76        8      0.2
    -3.5     79.5      7.5      0.2
    -0.5     81.5      7.5      0.2
     2.5     84.5        7      0.2
       5     87.5        7      0.2
     9.5       90      7.5      0.2
      12       93      6.5      0.2
     9.5     98.5        8      0.2
       8    100.5      6.5      0.2
       8      104      6.5      0.2
       5    106.5      6.5      0.2
       4      113        7      0.2
       3    114.5        7      0.2
       4      119        7      0.2
     4.5      123        7      0.2
       6    127.5        7      0.2
    10.5      133      8.5      0.2
      11      137      9.5      0.2
      11      142      9.5      0.2
       9      144      9.5      0.2
      12      148      9.5      0.2
    12.5      153      9.5      0.2
    16.5      158      9.5      0.2
      22      162      9.5      0.2
    23.5      165      9.5      0.2
    25.5    165.5      9.5      0.2

    7 22
     -42     50.5      9.5      0.8
   -40.5       49      9.5      0.3
     -39     46.5      9.5      0.3
   -36.5     46.5      9.5      0.3
     -34     42.5      9.5      0.3
     -32       40      8.5      0.3
   -27.5     40.5      8.5      0.3
   -25.5       39      8.5      0.3
   -22.5       39      8.5      0.3
   -19.5     40.5      8.5      0.4
     -17     40.5      8.5      0.4
     -15       41      8.5      0.4
   -12.5       44      8.5      0.4
      -6     45.5      8.5      0.4
      -4     46.5      8.5      0.3
      -1       47      8.5      0.3
     3.5       49      8.5      0.3
     4.5       50        9      0.3
     8.5       50      9.5      0.3
      12     51.5      9.5      0.3
    13.5     51.5     10.5      0.3
    16.5     53.5      9.5      0.9

    8 17
    16.5     53.5      9.5      0.9
    18.5       57      9.5      0.2
    24.5     56.5        9      0.2
    29.5     55.5        9      0.2
    31.5     55.5      9.5      0.2
      34       56      9.5      0.2
      45       55      9.5      0.2
      43     50.5        9      0.2
      52       48     10.5      0.2
    53.5     44.5     10.5      0.2
    56.5     44.5     10.5      0.2
    58.5     43.5       11      0.2
    61.5       43     10.5      0.2
      64     41.5       12      0.2
      65       40     10.5      0.2
    67.5     38.5       11      0.2
    76.5     36.5       12      0.2

    3 9
    16.5     53.5      9.5      0.9
    20.5     51.5       10      0.3
      24     49.5     10.5      0.3
    27.5       48      9.5      0.2
      32     47.5      9.5      0.2
      35       49      9.5      0.2
      37     48.5      9.5      0.2
      39       46      9.5      0.2
    42.5       44        9      0.2

    4 13
      -3      -10        6      1.6
    -2.5       -7        6      1.5
      -2       -5        7      1.5
      -1     -1.5        7      1.5
    -2.5        0        7      1.8
      -1      2.5      7.5      1.8
    -0.5      4.5      7.5      2.8
       1      7.5      7.5        2
     1.5      9.5        8      1.8
     2.5       10        9      1.8
     0.5       13        9      1.6
       0     15.5     10.5      1.6
    -2.5     17.5       10      1.6

    12 39
    -2.5     17.5       10      1.6
      -4     18.5     10.5      0.3
    -4.5       20        9      0.3
      -8       19        9      0.3
     -11     18.5        9      0.3
     -13     19.5     10.5      0.3
     -15       20     10.5      0.3
   -16.5       21      9.5      0.3
   -19.5       21      9.5      0.4
   -20.5       22       10      0.3
     -24       23       10      0.3
     -25     25.5       10      0.3
     -27       27       10      0.4
   -29.5     27.5       10      0.3
     -32       27       10      0.3
   -34.5     29.5       10      0.3
     -38     29.5       12      0.3
   -40.5     30.5       12      0.3
   -43.5     31.5     12.5      0.3
   -49.5     33.5     12.5      0.3
   -51.5       34     12.5      0.3
     -56     34.5     12.5      0.3
     -58     35.5     11.5      0.3
     -61       35     11.5      0.3
     -65       36       12      0.2
     -69       38       11      0.2
     -71       39     10.5      0.2
   -73.5       38     10.5      0.2
   -76.5       41     11.5      0.2
     -78       43     11.5      0.2
     -83     44.5       10      0.2
     -87     44.5      9.5      0.2
     -90       45     11.5      0.2
     -94     44.5       11      0.2
     -96       45       10      0.2
   -99.5       45       10      0.2
  -100.5     42.5     11.5      0.2
    -101       40     11.5      0.2
    -103       39       11      0.2

    1 4
    -2.5     17.5       10      1.6
    -0.5     18.5       11      1.7
       0     20.5       13      1.7
      -1       23       14      1.7

    2 8
      -1       23       14      1.7
      -4       23       14      1.7
      -5       24     14.5      1.5
      -7       26     14.5      1.5
      -7       28     15.5      1.5
      -9     28.5     15.5      1.5
     -11       30     15.5      1.5
   -12.5       30     16.5      1.5

    6 19
   -12.5       30     16.5      1.5
   -14.5     29.5     15.5      1.3
     -17     30.5     15.5      1.3
     -19     32.5     15.5      1.3
   -20.5       35     15.5      1.3
   -22.5       35       15      1.3
   -26.5       36     14.5      1.3
   -27.5     39.5     14.5      1.3
   -30.5       38     14.5      1.3
     -33       38     14.5      1.3
     -36       39       13      1.3
   -38.5     42.5     13.5      1.3
   -40.5       41       14      1.3
   -43.5     41.5       14      1.3
     -45       44       13      1.3
   -46.5     44.5       15      1.1
   -47.5     48.5       14      1.1
     -49     51.5     14.5      1.1
   -51.5       54     12.5        1

    12 37
   -51.5       54     12.5        1
   -54.5       55     12.5      0.6
     -56     56.5     12.5      0.6
   -58.5       58     12.5      0.6
     -60       59     12.5      0.6
   -65.5     59.5     12.5      0.6
     -68     59.5     11.5      0.6
     -71       59     11.5      0.6
   -75.5       59       11      0.6
   -77.5       61       12      0.6
     -80       61       12      0.6
   -83.5     64.5     11.5      0.6
   -88.5     63.5       11      0.4
   -91.5     61.5       11      0.4
   -94.5     61.5       11      0.4
   -96.5     61.5     10.5      0.4
   -97.5       63     12.5      0.3
    -101       64       11      0.3
  -102.5       63       13      0.3
  -105.5       64     11.5      0.3
    -107       63       13      0.3
  -108.5       63       12      0.3
  -110.5       64     11.5      0.3
    -113     61.5       13      0.3
  -114.5     63.5       11      0.3
  -117.5       63       13      0.2
    -121     63.5       14      0.2
  -121.5     65.5       12      0.2
    -124       66     11.5      0.2
    -125       65       13      0.2
  -127.5     66.5       13      0.2
    -130     67.5       13      0.2
    -132     65.5       13      0.2
    -134     67.5       13      0.2
    -140     67.5       13      0.2
  -139.5       71       13      0.2
  -141.5       71       14      0.2

    14 35
   -51.5       54     12.5        1
     -50       56     11.5      0.4
     -51     58.5       12      0.4
   -52.5       61       12      0.4
   -53.5       63       12      0.4
     -54       68       12      0.4
     -54       71     12.5      0.4
     -53     74.5     12.5      0.4
     -54     76.5       12      0.4
   -56.5       78       12      0.4
     -59     79.5       12      0.4
     -59       83     11.5      0.4
     -61       85     12.5      0.4
   -62.5       91     12.5      0.4
     -62     93.5       13      0.4
   -64.5       96       13      0.4
   -64.5    100.5       13      0.4
   -64.5    103.5       13      0.4
     -65    106.5       14      0.4
     -66    110.5     12.5      0.4
     -66    113.5     12.5      0.4
   -66.5      119     12.5      0.4
   -64.5    122.5     12.5      0.4
     -63      127     11.5      0.4
   -63.5      130       11      0.4
   -58.5      130     12.5      0.4
   -55.5      132     12.5      0.4
   -48.5    134.5       12      0.4
   -45.5    138.5     10.5      0.4
     -40      142     10.5      0.4
     -36      145      9.5      0.3
     -35    150.5      9.5      0.3
     -34    154.5      9.5      0.3
     -33      157       10      0.3
   -32.5      160      9.5      0.3

    5 14
   -32.5      160      9.5      0.3
     -35    160.5      9.5      0.2
   -36.5    162.5      9.5      0.2
   -37.5      171        8      0.2
   -37.5      174      9.5      0.2
   -36.5    177.5      8.5      0.2
     -36      182      8.5      0.2
   -36.5      186      8.5      0.2
     -36      189     10.5      0.2
     -36      192     10.5      0.2
   -34.5    193.5     10.5      0.2
     -34    197.5     10.5      0.2
   -34.5    200.5     10.5      0.2
     -35    204.5     10.5      0.2

    3 8
   -32.5      160      9.5      0.3
     -30    162.5       10      0.2
   -27.5    164.5       10      0.2
   -24.5    166.5       10      0.2
   -19.5      171        9      0.2
   -16.5    172.5       10      0.2
     -15      173      9.5      0.2
   -12.5      175       10      0.2

    7 15
   -12.5       30     16.5      1.5
   -11.5       33     16.5      0.3
     -10       35     15.5      0.3
     -10     41.5       16      0.3
     -10     45.5       16      0.3
      -7       48       15      0.3
      -2     54.5     14.5      0.3
     0.5       58       13      0.3
       4       61       13      0.3
      10       63       13      0.3
    12.5       69       13      0.3
    14.5     73.5       13      0.3
      17       78       13      0.3
      16       80     13.5      0.3
    15.5     83.5     12.5      0.3

    13 37
    15.5     83.5     12.5      0.3
    12.5       84     12.5      0.2
       8       85     13.5      0.2
     5.5     86.5       14      0.2
       1       87       14      0.2
       0     88.5       15      0.2
     0.5       91       15      0.2
      -2       91       15      0.2
      -3       93       15      0.2
    -2.5     94.5     14.5      0.2
      -5       96       15      0.2
      -5     99.5       14      0.2
      -6      105     13.5      0.2
    -8.5    104.5     13.5      0.2
     -11    105.5     13.5      0.2
      -8    109.5     13.5      0.2
   -11.5    112.5     13.5      0.2
   -11.5    115.5       14      0.2
   -12.5    118.5     12.5      0.2
     -12    120.5     12.5      0.2
   -12.5      124     12.5      0.2
     -12    128.5       12      0.2
    -9.5    132.5       12      0.2
      -7      136       12      0.2
      -7    139.5       12      0.2
      -5    145.5       12      0.2
    -4.5    151.5       12      0.2
      -9    154.5       12      0.2
   -10.5      158       12      0.2
   -12.5      160       12      0.2
     -14    162.5       12      0.2
     -15      165       12      0.2
   -16.5    166.5     11.5      0.2
   -19.5      169     11.5      0.2
     -23      169       12      0.2
   -27.5      167       13      0.2
   -28.5      168       13      0.2

    11 31
    15.5     83.5     12.5      0.3
      18     86.5     12.5      0.2
    19.5     89.5     13.5      0.2
    21.5     94.5       13      0.2
    21.5     97.5       13      0.2
      24    100.5       13      0.2
      27      103       13      0.2
      29      105       13      0.2
    32.5      107       13      0.2
      33      111       13      0.2
      35    113.5       13      0.2
      36      117       13      0.2
    37.5      120       12      0.2
      38    122.5       12      0.2
      39    126.5       12      0.2
    40.5    129.5       12      0.2
      42    131.5       12      0.2
      39    134.5       12      0.2
      38    138.5     13.5      0.2
    33.5    138.5       13      0.2
      34    140.5     12.5      0.2
      34    144.5     13.5      0.2
      34    146.5     11.5      0.2
    33.5      148       11      0.2
    30.5      149       13      0.2
    30.5      153       14      0.2
      30    154.5       13      0.2
    28.5    157.5       13      0.2
      25      158       13      0.2
      23    158.5       13      0.2
    21.5    158.5       13      0.2

    8 19
      -1       23       14      1.7
     1.5     23.5     14.5      0.5
     2.5       25     14.5      0.5
       2     29.5     14.5      0.5
       4     31.5     14.5      0.5
       6     34.5     14.5      0.5
       7     37.5       15      0.5
     7.5     41.5     13.5      0.5
       9       43     13.5      0.4
      11       47     13.5      0.4
    11.5       51     13.5      0.4
    12.5       54     11.5      0.4
      16       58     11.5      0.4
      20       61     11.5      0.4
      21       63     11.5      0.4
      25       66     11.5      0.4
    28.5       74     11.5      0.4
    28.5     76.5     11.5      0.4
      30       81       11      1.4

    8 21
      30       81       11      1.4
    28.5       84     11.5      0.4
    23.5     85.5     10.5      0.4
      21       87     10.5      0.4
      18       88     10.5      0.4
      14     89.5     11.5      0.4
      14       91     12.5      0.3
      11     95.5       13      0.3
      14       98       13      0.3
       9     97.5     13.5      0.3
     8.5      100     14.5      0.3
       6    102.5       12      0.3
     1.5      106     10.5      0.2
      -1      107       10      0.2
      -3      110        8      0.2
    -5.5    109.5        8      0.2
    -7.5    112.5        8      0.2
      -8    114.5        8      0.2
    -8.5      117        8      0.2
   -12.5      119      8.5      0.2
     -15    120.5        9      0.2

    4 12
     -15    120.5        9      0.2
   -17.5      121        9      0.2
   -20.5    122.5      9.5      0.2
     -23    123.5      8.5      0.2
   -25.5      123      8.5      0.2
   -27.5    122.5      8.5      0.2
   -30.5    122.5        8      0.2
     -34    120.5      7.5      0.2
   -36.5    120.5        7      0.2
     -40    119.5        7      0.2
     -44      119        4      0.2
   -47.5    114.5        8      0.2

    4 13
     -15    120.5        9      0.2
     -17      123      7.5      0.2
   -17.5    125.5      7.5      0.2
   -18.5      129      7.5      0.2
   -18.5    131.5      7.5      0.2
   -16.5      135        8      0.2
     -18      139      7.5      0.2
   -18.5    142.5        8      0.2
   -19.5    146.5      7.5      0.2
   -19.5    149.5      9.5      0.2
   -19.5      153      9.5      0.2
     -19      156        8      0.2
     -19    156.5        8      0.2

    6 12
      30       81       11      1.4
    33.5     83.5     11.5      0.3
      38       85     10.5      0.3
    42.5     88.5      9.5      0.3
    46.5       92        9      0.3
    52.5     95.5      8.5      0.3
      55     99.5     10.5      0.2
    58.5      100     10.5      0.2
      64    101.5       11      0.2
    67.5      104       12      0.2
    67.5      107     12.5      0.2
      69      109     11.5      0.2

    3 8
       1    -16.5        8      1.8
       4      -16        8        1
     8.5    -15.5      8.5      1.4
    10.5    -12.5      9.5      1.1
    12.5    -10.5       10      1.1
    13.5       -6       10      1.1
    15.5     -2.5       10        2
    16.5      0.5     10.5        2

    3 8
    16.5      0.5     10.5        2
      16        4       12      0.8
    16.5        6       11      0.8
      15      7.5       11        1
      15     10.5       11        1
      15     13.5     10.5        1
    15.5     16.5     10.5        1
    16.5     19.5     10.5      1.1

    7 26
    16.5     19.5     10.5      1.1
    14.5     20.5       11      0.3
    13.5       21     12.5      0.4
      11       21       13      0.4
     9.5     21.5     12.5      0.5
       8     22.5     12.5      0.5
     6.5     23.5       12      0.5
       5       24       13      0.5
       4     26.5       13      0.5
       2       27       13      0.5
      -1       27       14      0.5
    -1.5       28       15      0.5
    -4.5       28       15      0.5
    -6.5     28.5       15      0.5
    -7.5     30.5       15      0.5
   -10.5     30.5     14.5      0.5
     -15       34     15.5      0.5
   -16.5     36.5     16.5      0.5
     -18     37.5       16      0.4
     -21       40     15.5      0.4
     -20     41.5     16.5      0.4
     -21     45.5       16      0.4
   -22.5     47.5       15      0.4
     -25       53       15      0.4
   -26.5     51.5     15.5      0.4
   -26.5       55       15      0.4

    7 20
   -26.5       55       15      0.4
   -29.5     55.5       15      0.2
   -31.5     59.5     15.5      0.2
   -32.5       61       14      0.2
   -33.5     63.5       14      0.2
   -35.5     64.5       14      0.2
   -37.5     66.5       14      0.2
   -38.5     70.5     13.5      0.2
     -41     69.5     13.5      0.2
     -46       70     13.5      0.2
   -48.5       70     13.5      0.2
     -52       72       13      0.2
   -57.5       73       13      0.2
     -60     74.5     12.5      0.2
     -61       78     13.5      0.2
     -62       79     12.5      0.2
     -65       80     12.5      0.2
   -65.5       85       14      0.2
     -70       87       14      0.2
   -71.5       86     13.5      0.2

    8 19
   -26.5       55       15      0.4
     -26       57       16      0.2
   -26.5     62.5     14.5      0.2
     -28       66       14      0.2
   -29.5     69.5     13.5      0.2
   -29.5       75     13.5      0.2
   -29.5       79     14.5      0.2
   -34.5     80.5     13.5      0.2
   -35.5     82.5     13.5      0.2
   -39.5     81.5     13.5      0.2
     -41     83.5     13.5      0.2
   -43.5     83.5     13.5      0.2
   -46.5       84       13      0.2
   -49.5       87       12      0.2
     -53       84       14      0.2
     -55     83.5       13      0.2
   -62.5       88       14      0.2
     -69     89.5       13      0.2
   -69.5       89       13      0.2

    2 5
    16.5     19.5     10.5      1.1
      18       20     10.5      0.4
    19.5       23       11      0.4
    22.5     26.5       13      0.4
    25.5       27     12.5        1

    4 11
    25.5       27     12.5        1
    24.5       31     12.5      0.2
    25.5     33.5       14      0.2
    25.5     35.5     14.5      0.2
      27     37.5       15      0.2
      29       39       15      0.2
      29     41.5       15      0.2
    34.5       41       14      0.2
      39       40     15.5      0.2
    41.5       39     15.5      0.2
    44.5       40     15.5      0.2

    8 18
    25.5       27     12.5        1
      28       27       13      0.2
    30.5     32.5       14      0.2
      34       34     14.5      0.2
      39     36.5     15.5      0.2
    43.5     38.5     15.5      0.2
      47     39.5     16.5      0.2
    49.5       45     14.5      0.2
      53       48     14.5      0.2
      56       52     15.5      0.2
      58       53     14.5      0.2
      62       52       16      0.2
      68     52.5     16.5      0.2
    69.5     54.5       17      0.2
    72.5     54.5       17      0.2
      76     54.5     16.5      0.2
      85     57.5       17      0.2
    87.5       58       17      0.2

    1 3
    16.5      0.5     10.5        2
    18.5      0.5       12      0.4
      20        2       12        1

    3 11
      20        2       12        1
    20.5        4       12      0.5
    21.5        5       13      0.5
    23.5        8       13      0.5
    23.5       11     12.5      0.5
      26       14       13      0.5
      25       16       14      0.5
    25.5     18.5       14      0.5
    28.5     20.5     14.5      0.5
    29.5     22.5     15.5      0.5
    29.5     26.5       16      0.5

    1 5
    29.5     26.5       16      0.5
    27.5       28     17.5      0.3
      25     29.5       18      0.3
    23.5       31       17      0.3
    22.5     30.5       17      0.3

    19 59
    22.5     30.5       17      0.3
      18     27.5       17      0.3
      16       29       17      0.3
    13.5     28.5       17      0.3
    11.5       29       17      0.3
       9       30       17      0.3
       8       28       17      0.3
     4.5     28.5       17      0.3
       2       30       18      0.3
     0.5       33     17.5      0.3
    -2.5     32.5     17.5      0.3
    -5.5       33     17.5      0.3
    -9.5     32.5     17.5      0.3
     -11       34       18      0.3
     -14       34       18      0.3
     -16     35.5     18.5      0.3
     -17       37     17.5      0.3
     -20     37.5     17.5      0.3
     -21     39.5       17      0.3
   -23.5     40.5       17      0.3
   -24.5     42.5       17      0.3
   -24.5       45       17      0.3
     -27     45.5       17      0.3
   -28.5       50     15.5      0.3
   -29.5       53       15      0.3
     -30     55.5     14.5      0.3
   -31.5       62     14.5      0.3
     -33       65     14.5      0.3
   -34.5     69.5     14.5      0.3
   -37.5       72       14      0.3
     -40       72       14      0.3
   -41.5       75       14      0.3
     -42       78     13.5      0.3
     -44     79.5     13.5      0.3
   -44.5     82.5     13.5      0.3
   -46.5       84     13.5      0.3
   -49.5       88     13.5      0.3
     -55       88     12.5      0.3
     -59     85.5       12      0.3
     -64       85       12      0.3
   -67.5       84       12      0.3
   -69.5       85       12      0.3
   -72.5     83.5       12      0.3
     -75       85       12      0.3
   -77.5     83.5     11.5      0.3
     -81     83.5     11.5      0.3
     -85     82.5     11.5      0.3
   -87.5     82.5     11.5      0.3
   -89.5       83       13      0.3
   -91.5     84.5       11      0.3
     -95     82.5       11      0.2
   -97.5       84     12.5      0.2
   -99.5       84       12      0.2
  -101.5     84.5     11.5      0.2
    -105       83     12.5      0.2
  -107.5     80.5     12.5      0.2
    -110       81       12      0.2
    -112       80       11      0.2
  -113.5       80     11.5      0.2

    3 11
    22.5     30.5       17      0.3
      23     32.5       17      0.3
    24.5     34.5     16.5      0.3
      23       37     16.5      0.3
      21     38.5       16      0.3
    22.5       40       18      0.3
    21.5     42.5     16.5      0.3
      23     43.5     17.5      0.3
    21.5     47.5     17.5      0.3
      22       50     17.5      0.3
      23     51.5     17.5      0.3

    18 49
      23     51.5     17.5      0.3
    21.5     54.5       17      0.3
      19       58       17      0.3
      19     63.5     16.5      0.2
      16     64.5     16.5      0.2
    15.5     66.5     16.5      0.2
    16.5     68.5     17.5      0.2
    15.5       71     16.5      0.2
      14     71.5       16      0.2
    13.5       74       16      0.2
      14       76       16      0.2
    13.5       78       16      0.2
      13     80.5       16      0.2
      16     81.5       17      0.2
      16       86       16      0.2
    15.5       89       16      0.2
      16     94.5       16      0.2
      16       99     15.5      0.2
    14.5    103.5       16      0.2
    15.5      107     15.5      0.2
      13    108.5     16.5      0.2
    12.5      114     16.5      0.2
    11.5    116.5     14.5      0.2
    11.5      120     14.5      0.2
       7      122     14.5      0.2
     8.5      130     14.5      0.2
       6      132     14.5      0.2
     5.5    134.5     14.5      0.2
     5.5    140.5     14.5      0.2
     4.5      145       13      0.2
     2.5    147.5       12      0.2
       2    151.5     11.5      0.2
     0.5    153.5     11.5      0.2
     0.5      157     10.5      0.2
    -1.5      158     12.5      0.2
    -1.5      161       13      0.2
      -4      164       13      0.2
      -4    167.5       13      0.2
    -5.5      170       13      0.2
    -3.5      173       13      0.2
      -6    174.5       13      0.2
      -4      180     12.5      0.2
      -3      183       13      0.2
       1    186.5     12.5      0.2
       0    188.5     12.5      0.2
     1.5    191.5       13      0.2
    -2.5      193       12      0.2
     0.5    194.5     12.5      0.2
       0    193.5     12.5      0.2

    2 4
      23     51.5     17.5      0.3
      29     55.5       17      0.2
      34       55       18      0.2
      34     54.5       18      0.2

    1 4
    29.5     26.5       16      0.5
    25.5       28       17      0.2
    24.5     29.5       17      0.2
      23     29.5     16.5      0.2

    5 11
      20        2       12        1
    22.5        4     12.5      0.5
      27        5       12      0.5
      31      7.5     11.5      0.5
      33        8       11      0.3
    37.5        9       11      0.3
      42       10     10.5      0.3
    45.5     10.5       13      0.3
    50.5     10.5     13.5      0.3
    55.5       13     13.5      0.3
      58       13     13.5      1.1

    9 24
      58       13     13.5      1.1
      63       15     13.5      0.3
      68       18     12.5      0.3
    70.5     21.5       12      0.3
      75       25     13.5      0.3
      78     27.5       14      0.3
    81.5       30       14      0.3
    84.5       32     14.5      0.3
      85     34.5       15      0.3
    88.5     36.5     14.5      0.3
    90.5     36.5     15.5      0.3
      93     36.5     16.5      0.2
      96       37     17.5      0.2
     101     39.5       18      0.2
   103.5       42     16.5      0.2
   104.5       43     16.5      0.2
   106.5       44     16.5      0.2
     108     45.5     16.5      0.2
   110.5     47.5       17      0.2
   111.5       50       17      0.2
     115       53     16.5      0.2
   117.5     57.5     16.5      0.2
     122       60     16.5      0.2
   122.5       61     16.5      1.3

    6 16
   122.5       61     16.5      1.3
   122.5     63.5     16.5      0.2
   121.5     64.5     16.5      0.2
     117       65       16      0.2
   114.5       65       17      0.2
     112     64.5     16.5      0.2
     108     64.5       17      0.2
   104.5     63.5       17      0.2
    97.5       64       17      0.2
      97       67     15.5      0.2
      94       66     17.5      0.2
      91     67.5     17.5      0.2
    85.5       68     17.5      0.2
    84.5     69.5       18      0.2
    82.5     72.5       18      0.2
    83.5       75       18      0.2

    2 6
   122.5       61     16.5      1.3
     126       64     16.5      0.2
   127.5     66.5       17      0.2
   129.5       68     17.5      0.2
     132     69.5     17.5      0.2
     132       69     17.5      0.2

    1 4
      58       13     13.5      1.1
    61.5       11       12      0.2
    63.5        9       12      0.2
      64        9       12      0.2


CONNECTIONS:

        0    1
        0    1
        2    1
        2    1

        0    1
        1    1
        2    1
        2    1
        1    1
        0    1
        6    1
        6    1

        0    1
        0    1
        2    1
        3    1
        4    1
        4    1
        6    1
        6    1
        3    1
        2    1
       10    1
       10    1
       12    1
       12    1

        0    1
        0    1
        2    1
        3    1
        4    1
        4    1
        6    1
        6    1
        3    1
        9    1
        9    1
        2    1
       12    1
       13    1
       13    1
       12    1

        0    1
        1    1
        2    1
        2    1
        1    1
        5    1
        5    1
        0    1
        8    1
        9    1
       10    1
       10    1
       12    1
       12    1
        9    1
        8    1
       16    1
       17    1
       17    1
       16    1


/*----------------------------------------------------------------*/
proc geometry() { 

	/* NULL geometry procedure: keeps the user from
	calling the geometry procedure in isolation. */

    printf("\nYou must re-read the entire geometry\n")
    printf("file to execute geometry().\n\n")
}