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]
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
CTT3219N
ctt3219n.asc
ctt3219n.hoc
                            
/*----------------------------------------------------------------
%W%  %G%
ctt3219n.asc  translated Tue Dec 17 10:30:39 1996 by ntscable 2.0
source file syntax: Eutectic
output file syntax: CABLE
soma: diameter = 15.238 um  length = 26.5494 um  area = 1270.96 um2
      20 three-D points; 24 outline points numbered 1-24
      outline diameter = 21.2003 um
6 primary neurites
47 branches totaling 3259.51 um in length, 4096.76 um2 in area
1001 tree points translated to 369 segments (1 requested)
Neurites divided into segments of equal dx between adjacent digitized
branch points.
Segment length constrained to be < 10 um.
No. points   1025
No. trees       7
Text  CTT3219N.GR1                                                                                                            

----------------------------------------------------------------*/
					/* create sections */
create    soma,\
          dend1[31],\
          dend2[15],\
          dend3[11],\
          dend4[15],\
          dend5[15],\
          dend6[1]



/*----------------------------------------------------------------*/
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 = 0,30 {
        dend1[i] {
            nseg = fscan()
            pt3dclear()
            for j = 1, fscan() {
                pt3dadd(fscan(),fscan(),fscan(),fscan())
            }
        }
    }

    for i = 0,14 {
        dend2[i] {
            nseg = fscan()
            pt3dclear()
            for j = 1, fscan() {
                pt3dadd(fscan(),fscan(),fscan(),fscan())
            }
        }
    }

    for i = 0,10 {
        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 = 0,14 {
        dend5[i] {
            nseg = fscan()
            pt3dclear()
            for j = 1, fscan() {
                pt3dadd(fscan(),fscan(),fscan(),fscan())
            }
        }
    }

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



					/* branching topology*/
    for i = 1,30 {
        dend1[fscan()] connect dend1[i] (0), fscan()
    }

    for i = 1,14 {
        dend2[fscan()] connect dend2[i] (0), fscan()
    }

    for i = 1,10 {
        dend3[fscan()] connect dend3[i] (0), fscan()
    }

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

    for i = 1,14 {
        dend5[fscan()] connect dend5[i] (0), fscan()
    }

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

}

geometry()


SOMA COORDINATES AND DIAMETERS:

    20
     -11     -1.5       -1        0
     -11     0.25     -0.5   3.6401
   -10.5   1.8333 -0.58333   8.4146
    -9.5      1.4    -0.65   10.933
      -8        1     -0.5   14.142
      -6  0.58333 -0.16667   18.361
      -5  0.71429 -0.071429   19.822
    -2.5  0.83333   -0.875   22.778
      -2        1 -0.91667   23.073
       0        1 -0.83333    23.01
     0.5  0.91667    -0.75   22.839
       3      0.5    -0.75   22.006
     4.5    -0.75    -0.75   19.506
       6    -0.75        0    16.53
     6.5   -0.875     0.25   15.324
       7   -1.125     0.25   14.329
     7.5     -1.5     0.25   13.086
     8.5    -1.75     0.25   9.6177
     8.5    -0.25     -0.5      6.5
       9       -1        0        0


NEURITE COORDINATES AND DIAMETERS:

    1 3
       9        3      1.5      2.5
    10.5        4      1.5      1.9
      11      6.5      3.5      1.9

    4 13
      11      6.5      3.5      1.9
    12.5        6        3      1.1
      14      5.5      4.5      1.1
    15.5        7      5.5      1.1
    15.5      9.5        5      1.5
      17       12      5.5      1.2
    18.5       14      4.5      1.2
    19.5     15.5      3.5      1.2
      19     18.5      5.5      1.2
    21.5       19        5      0.9
    23.5     20.5        6      0.9
      25     21.5        5      0.9
      28     20.5        5      1.4

    2 8
      28     20.5        5      1.4
      30     19.5        5      0.7
      32       17      5.5      0.7
      35     16.5        4      0.5
      36       14        4      0.5
      38       13        5      0.5
    39.5       12      3.5      0.5
      41       13      2.5      0.5

    4 11
      41       13      2.5      0.5
    43.5       14      4.5      0.3
      45     15.5        5      0.3
    47.5     16.5        6      0.3
      49       18        8      0.3
      52     16.5        8      0.3
      56     14.5      7.5      0.3
    56.5       12        7      0.3
    58.5       10      8.5      0.3
    60.5        6      7.5      0.3
    61.5      4.5        6      0.3

    1 3
    61.5      4.5        6      0.3
      62        2      8.5      0.1
      63     -1.5      8.5      0.1

    1 3
    61.5      4.5        6      0.3
    63.5      2.5        7      0.1
      65      1.5      6.5      0.1

    1 5
      65      1.5      6.5      0.1
      65        3      6.5      0.1
    68.5      3.5      6.5      0.1
      71        3      6.5      0.1
      72      2.5        5      0.1

    2 5
      65      1.5      6.5      0.1
      67      1.5        7      0.1
      69       -1        7      0.1
      72       -4        6      0.1
      74       -5        6      0.1

    6 22
      41       13      2.5      0.5
      43     12.5      1.5      0.3
      44       12        1      0.3
      46     12.5        1      0.3
      47     11.5        1      0.3
    49.5       12        1      0.3
      51     11.5        2      0.3
      53     10.5      2.5      0.3
    55.5       10        4      0.3
      56        7      3.5      0.3
    59.5      4.5      4.5      0.3
    60.5      1.5      4.5      0.3
      62      1.5      7.5      0.3
      64       -1      6.5      0.3
    65.5       -2      6.5      0.3
    66.5       -4      8.5      0.3
      69     -5.5        8      0.3
      71       -7        8      0.3
      73     -6.5        8      0.2
    73.5     -8.5      8.5      0.2
      76     -8.5        8      0.2
      79      -10        7      0.1

    7 22
      28     20.5        5      1.4
    26.5       23      4.5      0.6
    28.5       26        5      0.6
    28.5     28.5        6      0.6
    29.5     30.5      6.5      0.9
      30     33.5      5.5      0.9
    31.5     35.5        6      0.9
    31.5     38.5      6.5      0.9
    34.5       38        6      0.9
    36.5     39.5        6      0.6
    37.5       41      6.5      0.6
      41     41.5        8      0.6
      43       43        8      0.6
      45     41.5        8      0.6
      46     44.5        8      0.6
    49.5       44       10      0.6
    53.5     44.5       11      0.6
      54       45     10.5      0.6
    54.5       49     10.5      0.6
    56.5     50.5     10.5      0.6
    58.5       51       10      0.6
    58.5       55       10      0.6

    1 3
    58.5       55       10      0.6
      57     57.5       10      0.1
      57     57.5       10      0.1

    1 4
      57     57.5       10      0.1
      57     60.5       10      0.1
      56     63.5       10      0.1
      57     65.5     10.5      0.1

    2 5
      57     57.5       10      0.1
      55     59.5       10      0.1
    53.5       63     10.5      0.1
    52.5       67       11      0.1
    50.5     69.5       11      0.1

    3 8
    58.5       55       10      0.6
    59.5     56.5       10      0.5
      59     60.5        9      0.5
    61.5     62.5      7.5      0.7
      61     66.5      8.5      0.7
      63     68.5      8.5      0.7
    62.5       73      8.5      0.7
    62.5       73      8.5      0.6

    2 6
    62.5       73      8.5      0.6
      61       75      8.5      0.1
    61.5       78      8.5      0.1
      60       82      8.5      0.1
      58     85.5        8      0.1
      58     88.5        8      0.1

    2 5
    62.5       73      8.5      0.6
      65       76        8      0.6
    65.5     78.5        8      0.6
      66     81.5        8      0.6
      68       84        8      1.2

    2 6
      68       84        8      1.2
      67       86      8.5      0.1
    65.5     88.5     10.5      0.1
    64.5       92     11.5      0.1
      62     93.5     11.5      0.1
    59.5     93.5     11.5      0.1

    6 16
      68       84        8      1.2
      71     83.5      6.5      0.7
    74.5       85      6.5      0.4
      77       85      6.5      0.4
      79       81      7.5      0.4
    81.5       77      7.5      0.4
      84     75.5        8      0.4
      85       73       10      0.4
    86.5     70.5       10      0.4
      88       66     10.5      0.4
    91.5     64.5     10.5      0.4
    93.5       63     11.5      0.4
    95.5     62.5     11.5      0.4
    96.5     62.5     11.5      0.4
    98.5     60.5     11.5      0.4
     103     61.5       10      0.4

    4 9
     103     61.5       10      0.4
     104     64.5       10      0.1
     108       68       10      0.1
     111       72       10      0.1
   113.5       75     10.5      0.1
   116.5     78.5     10.5      0.1
     120     82.5     10.5      0.1
   124.5       86       11      0.1
     128     87.5       11      0.1

    2 8
     103     61.5       10      0.4
   104.5     59.5       11      0.3
     106       57     10.5      0.3
   107.5       57     10.5      0.3
   109.5       55     10.5      0.3
     113       54     10.5      0.3
   114.5       54       11      0.3
     116     53.5       11      0.3

    2 5
     116     53.5       11      0.3
     120     53.5       10      0.1
     125     52.5     10.5      0.1
   130.5       55     10.5      0.1
   133.5     57.5     10.5      0.1

    4 12
     116     53.5       11      0.3
     116     49.5       12      0.1
   117.5       48       12      0.1
   119.5     46.5     10.5      0.1
   120.5       44     10.5      0.1
   122.5       41     10.5      0.1
     124     37.5     10.5      0.1
   124.5     34.5     10.5      0.1
   124.5     32.5     10.5      0.1
     125       28       11      0.1
   127.5       24     11.5      0.1
   128.5     20.5     11.5      0.1

    3 11
      11      6.5      3.5      1.9
    10.5        7      1.5      1.8
     9.5       10      3.5      1.2
     8.5       12      3.5      1.2
       9     15.5      3.5      1.2
      12     17.5        4      0.9
      13     20.5      5.5      0.9
      13     22.5      5.5      0.9
      14     24.5      5.5      0.9
      14       26        5      0.9
      15     28.5        5      0.9

    5 18
      15     28.5        5      0.9
      17     29.5      5.5      0.6
    18.5       31        6      0.6
      20       33        6      0.6
      22     32.5        6      0.6
    23.5     33.5      6.5      0.6
      25     33.5      6.5      0.6
      26     31.5      6.5      0.4
      28       33        5      0.4
    29.5       33        5      0.4
    32.5       31        6      0.4
    34.5       30        6      0.4
    36.5     30.5      6.5      0.4
      40     29.5        7      0.4
      42     30.5        9      0.4
    42.5     31.5        9      0.4
    42.5     34.5     11.5      0.2
    43.5       36     11.5      0.2

    1 4
    43.5       36     11.5      0.2
      43     38.5     11.5      0.1
      42       42       12      0.1
    40.5       45     13.5      0.1

    3 7
    40.5       45     13.5      0.1
    40.5     47.5     13.5      0.1
    40.5       51     13.5      0.1
      39     59.5       15      0.1
      39       63     12.5      0.1
      39       69       11      0.1
      37     72.5       12      0.1

    2 6
    40.5       45     13.5      0.1
    39.5     47.5       11      0.1
      38       51       11      0.1
    35.5     53.5     10.5      0.1
      32     55.5     10.5      0.1
    31.5       57     10.5      0.1

    2 7
    43.5       36     11.5      0.2
      45     40.5     11.5      0.1
    44.5     43.5       12      0.1
      44       46     11.5      0.1
      44     49.5     11.5      0.1
      42     52.5     11.5      0.1
      42     52.5       10      0.1

    1 5
      42     52.5       10      0.1
      42     54.5     10.5      0.1
    41.5     57.5        9      0.1
    40.5       61      9.5      0.1
    40.5       61      9.5      0.1

    3 9
      42     52.5       10      0.1
    39.5     54.5       10      0.1
    36.5     57.5       11      0.1
      35     60.5       12      0.1
    35.5       64     12.5      0.1
    35.5     66.5       12      0.1
    34.5     68.5       12      0.1
      32       71       12      0.1
      29     73.5     12.5      0.1

    5 14
      15     28.5        5      0.9
    13.5     31.5        4      0.2
      13     33.5        5      0.2
      14       37        5      0.2
      13       41        4      0.2
      14     44.5      4.5      0.2
      13     46.5        5      0.2
      15     51.5        5      0.2
      15       54      4.5      0.1
    16.5       56      4.5      0.1
      18       58        3      0.1
    19.5       61        3      0.1
    21.5       65        3      0.1
      22       71        3      0.1

    2 7
     6.5       -7        0      1.1
     7.5       -6        0      1.1
     8.5       -4        2      1.1
     9.5       -5        2      1.1
      10       -6        3      1.9
      12     -6.5        3      1.9
    14.5     -8.5      2.5      1.9

    2 5
    14.5     -8.5      2.5      1.9
    16.5       -6      2.5      0.9
    19.5     -6.5        2      0.5
    22.5     -6.5        4      0.5
    25.5       -4      4.5        1

    11 31
    25.5       -4      4.5        1
    25.5     -1.5      4.5      0.1
    26.5        1        5      0.1
    25.5      3.5        4      0.1
    25.5        6        4      0.1
      26     10.5      1.5      0.1
    24.5       14        2      0.1
      24       17      2.5      0.1
      23     19.5      2.5      0.1
    22.5     23.5      3.5      0.1
      22       25      3.5      0.1
    21.5     26.5      3.5      0.1
      20     28.5      5.5      0.1
      20       31        5      0.1
    19.5       34        5      0.1
      20       36        5      0.1
      19       38        5      0.1
      18     41.5      5.5      0.1
    15.5       46      6.5      0.1
      15     49.5        7      0.1
    15.5     52.5      7.5      0.1
      17       57      5.5      0.1
    17.5     62.5      5.5      0.1
      18       66      7.5      0.1
    16.5     70.5      7.5      0.1
      15       74        7      0.1
      14     77.5        6      0.1
    12.5     80.5      7.5      0.1
    12.5       85        9      0.1
      11     89.5      9.5      0.1
       9     92.5      9.5      0.1

    6 20
    25.5       -4      4.5        1
    26.5       -4      3.5      0.3
    27.5       -6      3.5      0.3
      29     -5.5      4.5      0.3
    31.5     -1.5      4.5      0.3
      35      0.5      4.5      0.3
      35        3      5.5      0.3
    37.5      4.5      4.5      0.3
      39        5      4.5      0.3
    42.5      6.5      5.5      0.3
      46      7.5      5.5      0.3
    49.5        3      6.5      0.3
      50        2      6.5      0.3
    51.5        0      6.5      0.3
      53     -1.5      6.5      0.3
    54.5       -8        8      0.3
      57     -9.5        8      0.3
    59.5    -10.5        6      0.3
    61.5    -11.5        6      0.3
    62.5      -13      6.5      0.3

    3 8
    62.5      -13      6.5      0.3
    61.5    -14.5      6.5      0.1
    60.5    -16.5      6.5      0.1
      59    -17.5      5.5      0.1
    56.5    -17.5      6.5      0.1
      54      -21      8.5      0.1
      51    -26.5      9.5      0.1
      51    -29.5        9      0.1

    1 3
    62.5      -13      6.5      0.3
      64      -13        5      0.3
    64.5      -13        5      0.1

    4 9
    64.5      -13        5      0.1
      66      -13      6.5      0.1
    70.5      -13        6      0.1
    74.5    -12.5       10      0.1
      79    -13.5        8      0.1
    83.5      -11      7.5      0.1
    85.5     -7.5      7.5      0.1
      86     -3.5       10      0.1
    87.5        0        8      0.1

    4 11
    64.5      -13        5      0.1
      66    -15.5        6      0.3
    68.5      -18        7      0.3
    71.5    -19.5      8.5      0.3
      73    -23.5       10      0.3
      75      -24     11.5      0.3
    76.5    -26.5     11.5      0.3
      79    -28.5     11.5      0.3
      81    -30.5       12      0.3
      81      -36     13.5      0.1
    81.5      -36     13.5      0.1

    2 6
    14.5     -8.5      2.5      1.9
    14.5    -10.5      2.5      1.2
      16    -12.5      2.5      1.2
      17      -15      3.5      1.2
    19.5    -16.5      1.5      1.2
      21      -20        0      0.9

    1 5
      21      -20        0      0.9
    20.5      -21       -1      0.1
      19      -21       -1      0.1
    18.5    -22.5       -1      0.1
    18.5      -23       -1      0.1

    2 6
      21      -20        0      0.9
      22    -20.5     -0.5      1.2
      24    -20.5     -0.5      1.2
    26.5      -23        1      0.8
      29    -24.5        1      0.8
    31.5    -25.5        1      0.8

    9 25
    31.5    -25.5        1      0.8
    33.5    -28.5        1      0.4
    33.5    -31.5        1      0.4
      36    -35.5     -0.5      0.3
    36.5    -38.5     -0.5      0.3
      38    -40.5     -0.5      0.3
      40      -44        0      0.3
    41.5    -47.5        0      0.3
    42.5      -51      1.5      0.3
      44    -55.5      0.5      0.3
    45.5      -57      0.5      0.3
    47.5    -60.5      1.5      0.3
      48      -64        2      0.3
      51    -68.5      3.5      0.1
    52.5      -73      3.5      0.1
    53.5    -76.5      3.5      0.1
      56      -78        4      0.1
    55.5      -80        3      0.1
    56.5      -83        3      0.1
      56    -86.5      2.5      0.1
    58.5      -91      3.5      0.1
      60      -93        4      0.1
    62.5    -96.5      2.5      0.1
      65      -98        2      0.1
    65.5   -100.5        2      0.1

    1 4
    31.5    -25.5        1      0.8
      34    -24.5      2.5      0.5
      36    -24.5        3      0.5
      37      -23        3      0.5

    1 4
      37      -23        3      0.5
    35.5    -21.5        3      0.1
      35      -19      0.5      0.1
      36      -17       -2      0.1

    16 56
      37      -23        3      0.5
      38    -22.5        3      0.5
    40.5      -23        3      0.5
    42.5      -22        1      0.5
      44    -21.5        1      0.5
      46    -20.5        1      0.5
      47    -20.5      2.5      0.5
    45.5    -22.5      1.5      0.5
      47      -24      2.5      0.5
    49.5    -23.5      2.5      0.5
      51    -25.5      2.5      0.5
      53    -25.5        2      0.4
      56    -25.5      2.5      0.4
    57.5      -26      2.5      0.4
    58.5    -25.5        2      0.4
    60.5      -26      2.5      0.4
    62.5      -26      2.5      0.3
      66      -27        3      0.3
    67.5      -30        3      0.3
    69.5      -29        3      0.3
    71.5      -28        4      0.3
      72    -29.5      3.5      0.3
    72.5    -30.5      5.5      0.3
      74    -31.5      5.5      0.3
    75.5    -31.5        6      0.3
      77      -31        6      0.3
    78.5      -33        6      0.3
      81    -31.5        6      0.3
    83.5    -32.5        6      0.3
      85      -32      6.5      0.3
    86.5    -32.5      6.5      0.3
    87.5      -32      7.5      0.3
      91      -33      7.5      0.3
      93      -33      7.5      0.3
      95    -34.5      7.5      0.3
      98    -34.5        9      0.3
    99.5      -36        9      0.3
     101      -37      7.5      0.3
     104    -38.5      7.5      0.3
   106.5    -41.5        8      0.3
     109      -43      9.5      0.3
     112    -44.5      9.5      0.3
   114.5    -46.5      9.5      0.3
   116.5    -50.5        9      0.3
   116.5    -55.5      8.5      0.3
   115.5      -59        9      0.1
   115.5      -63     11.5      0.1
   116.5      -67     11.5      0.1
   118.5      -70     11.5      0.1
   120.5      -72     11.5      0.1
     122    -74.5       12      0.1
   125.5      -79       12      0.1
     128    -82.5       12      0.1
   130.5      -87       13      0.1
   134.5      -92     12.5      0.1
   136.5      -92     12.5      0.1

    3 10
     6.5       -8        0      3.8
       7    -10.5      1.5      2.7
     7.5    -13.5        1      1.9
      10      -15     -0.5      1.9
    11.5      -17        0      1.9
      13    -19.5        3      1.9
    14.5    -22.5      2.5      1.9
    14.5    -24.5        3      1.9
      16    -26.5      3.5      1.9
    16.5    -27.5      3.5      1.9

    1 2
    16.5    -27.5      3.5      1.9
    17.5      -30        1      1.2

    11 29
    17.5      -30        1      1.2
      15    -31.5      3.5      0.9
    12.5      -32        3      0.7
    11.5    -36.5        4      0.7
     9.5    -39.5      4.5      0.7
       5      -41        4      0.7
     2.5    -43.5        4      0.5
       4      -48      3.5      0.5
     4.5    -50.5      3.5      0.5
       5    -52.5      4.5      0.5
     4.5      -55      3.5      0.3
       3    -58.5      4.5      0.2
      -1    -62.5        3      0.2
      -1      -64        3      0.2
    -3.5      -65        3      0.2
    -4.5    -67.5        3      0.2
      -6      -71        4      0.2
    -5.5      -74      4.5      0.1
    -6.5      -77      4.5      0.1
      -4    -79.5        4      0.1
    -2.5    -84.5      3.5      0.1
    -1.5    -89.5      3.5      0.1
    -2.5      -94      3.5      0.1
    -3.5    -95.5      3.5      0.1
      -5      -99      3.5      0.1
    -5.5     -104        2      0.1
      -8   -107.5        4      0.1
   -10.5     -111      3.5      0.1
     -11   -114.5      3.5      0.1

    2 7
    17.5      -30        1      1.2
      19      -31        1      0.7
    20.5      -34        1      0.7
    22.5    -35.5      0.5      0.7
    24.5      -39      0.5      0.7
    27.5      -40      0.5      0.7
      29      -41        1      0.7

    1 5
      29      -41        1      0.7
    30.5      -41      0.5      0.1
      33      -39      0.5      0.1
    35.5      -39        1      0.1
      38      -39        1      0.1

    1 5
      29      -41        1      0.7
    28.5    -42.5        1      0.6
      30    -45.5        1      0.6
      32    -46.5      1.5      0.6
      32    -47.5      1.5      0.6

    7 24
      32    -47.5      1.5      0.6
      35      -47        2      0.3
    36.5    -48.5        2      0.3
    38.5    -48.5        2      0.3
      40      -50        4      0.3
      44    -49.5      3.5      0.3
      45    -52.5      3.5      0.3
      47      -52      3.5      0.3
    48.5    -53.5      5.5      0.3
    51.5    -53.5      5.5      0.3
    55.5    -54.5      5.5      0.3
      59    -55.5        6      0.3
      63    -56.5        7      0.3
    63.5      -59        7      0.3
      66    -60.5        6      0.3
    66.5      -62        6      0.3
    68.5    -63.5        7      0.3
      70    -65.5        7      0.3
      71      -67        7      0.3
      71    -68.5      6.5      0.1
      73    -70.5        7      0.1
      75    -73.5        7      0.1
      75    -77.5        7      0.1
      75    -82.5        7      0.1

    11 31
      32    -47.5      1.5      0.6
    32.5      -49      1.5      0.5
    33.5    -52.5      1.5      0.5
      34      -54      1.5      0.5
    33.5    -55.5        1      0.5
    35.5      -57        3      0.5
      36    -59.5        3      0.5
      37    -62.5        3      0.5
    37.5    -64.5        3      0.5
    37.5      -66        3      0.5
    39.5    -68.5        3      0.5
    40.5      -72        4      0.4
      42      -73        4      0.4
      42    -79.5      4.5      0.4
    41.5    -81.5      4.5      0.4
      43      -85      4.5      0.4
      44      -89      4.5      0.4
      44      -91      4.5      0.4
      46    -94.5        4      0.4
    47.5    -96.5        4      0.4
      51    -98.5        4      0.4
      52     -101        4      0.3
      54     -104        5      0.3
      55     -109        5      0.3
      58     -116        5      0.3
    60.5   -119.5      4.5      0.3
      64     -124        7      0.1
    65.5     -127        8      0.1
      67     -132        8      0.1
      68     -136        8      0.1
      70   -139.5        8      0.1

    2 5
    16.5    -27.5      3.5      1.9
    18.5      -28      4.5      0.4
    21.5    -28.5        4      0.4
    22.5      -31        6      0.4
      24      -32      6.5      0.4

    1 4
      24      -32      6.5      0.4
      25      -34      6.5      0.1
      28      -36      6.5      0.1
      31    -37.5      6.5      0.1

    8 22
      24      -32      6.5      0.4
      27      -31      4.5      0.3
    28.5      -30      6.5      0.5
      31    -30.5      6.5      0.3
    32.5    -31.5      5.5      0.1
    34.5    -31.5        7      0.1
      38      -32        7      0.1
    39.5    -31.5      6.5      0.1
    42.5      -30      9.5      0.1
      45    -28.5      9.5      0.1
      48      -30      9.5      0.1
      51    -28.5      9.5      0.1
      55      -33      9.5      0.1
      58    -33.5      9.5      0.1
      59    -37.5      9.5      0.1
    60.5    -40.5      9.5      0.1
      62    -44.5      9.5      0.1
      63      -50       12      0.1
      64      -55       12      0.1
      69    -58.5      8.5      0.1
      73      -59     12.5      0.1
    74.5      -60     11.5      0.1

    1 2
      -5       -5     -0.5      3.4
      -6     -6.5        6      3.4

    2 7
      -6     -6.5        6      3.4
      -5     -8.5        7      1.6
    -5.5    -11.5        6      1.6
      -5      -13      6.5      2.1
    -4.5    -16.5        6      1.7
    -4.5    -20.5      4.5      2.6
    -4.5    -20.5      4.5      2.6

    8 25
    -4.5    -20.5      4.5      2.6
      -6      -22      3.5        1
      -7      -25        4        1
    -8.5      -28        3        1
    -9.5      -30        3        1
     -10      -33        4      0.8
   -10.5      -35        5      0.8
      -9    -37.5        6      0.6
    -8.5    -40.5      6.5      0.6
    -6.5      -43      6.5      0.6
      -4    -45.5        7      0.6
    -2.5    -47.5      7.5      0.6
    -1.5      -49      7.5      0.6
    -0.5    -51.5      8.5      0.4
       1    -55.5        9      0.4
       3      -60        9      0.4
     4.5    -65.5      8.5      0.4
     5.5      -67      8.5      0.4
     5.5      -69      8.5      0.4
       7    -71.5      8.5      0.4
     8.5      -74      8.5      0.4
     9.5    -74.5      8.5      0.4
    10.5      -78      8.5      0.4
    13.5      -82        7      0.4
      14      -86      7.5      0.4

    4 6
      14      -86      7.5      0.4
      11    -87.5      8.5      0.1
     7.5      -94      8.5      0.1
     5.5     -100      8.5      0.1
       6     -107      8.5      0.1
     7.5     -113      8.5      0.1

    7 21
      14      -86      7.5      0.4
      17    -86.5      7.5      0.3
      18      -90        8      0.3
      20    -90.5        8      0.3
      20      -93      7.5      0.3
    22.5    -94.5      7.5      0.3
    24.5      -97      5.5      0.3
      27      -97      5.5      0.3
      28      -99        5      0.3
    30.5     -101        5      0.3
      31   -103.5        5      0.3
    33.5   -104.5      4.5      0.3
    34.5     -109        4      0.3
      37     -109        4      0.3
    37.5     -110        4      0.3
      37     -112        5      0.3
    38.5     -114        4      0.3
      41   -114.5        6      0.3
      44   -116.5      5.5      0.3
      46   -118.5        5      0.3
      48     -124        5      0.1

    4 8
      48     -124        5      0.1
    47.5   -129.5        5      0.1
      48   -131.5        5      0.1
      49   -135.5      4.5      0.1
    50.5     -144        7      0.1
    50.5   -150.5        7      0.1
    53.5     -156        6      0.1
      53     -156        6      0.1

    5 12
      48     -124        5      0.1
      51   -124.5        4      0.1
    52.5   -127.5      5.5      0.1
      55     -130      5.5      0.1
      58   -133.5      5.5      0.1
      59   -137.5        6      0.1
      59   -142.5        6      0.1
      60     -147        7      0.1
    64.5   -149.5        6      0.1
    66.5   -151.5        6      0.1
    70.5   -155.5        6      0.1
    70.5   -158.5        6      0.1

    4 12
    -4.5    -20.5      4.5      2.6
    -2.5      -22        4      0.8
       0      -26      5.5      0.8
       2    -29.5      5.5      0.8
     4.5    -31.5      5.5      0.8
       7    -33.5      5.5      0.8
     8.5      -35      5.5      0.8
      10    -38.5        7      0.5
    11.5    -42.5      5.5      0.5
    12.5      -44      4.5      0.5
      13      -47      4.5      0.5
    14.5      -49        4      1.2

    12 31
    14.5      -49        4      1.2
    13.5    -50.5        4      0.6
    12.5      -55        4      0.6
    11.5      -59        6      0.6
      10      -62        6      0.5
     7.5    -63.5        7      0.5
     6.5    -67.5        6      0.5
       8    -69.5        4      0.5
     8.5      -72      4.5      0.5
    11.5    -73.5      3.5      0.5
    12.5      -76        4      0.5
      10    -79.5        4      0.5
     7.5      -82        4      0.5
       5    -80.5      3.5      0.3
       2      -82        3      0.3
       0      -86        3      0.3
     1.5    -88.5      4.5      0.3
       3    -90.5      4.5      0.3
     4.5    -93.5      4.5      0.3
       7    -97.5      4.5      0.3
     8.5     -100      4.5      0.1
    10.5     -104      4.5      0.1
    11.5   -108.5      4.5      0.1
       9     -113        4      0.1
      11   -114.5        5      0.1
      13   -117.5      3.5      0.1
    15.5   -121.5        4      0.1
    16.5   -123.5        4      0.1
    19.5   -126.5        4      0.1
      21     -133        5      0.1
      21     -136      4.5      0.1

    3 10
    14.5      -49        4      1.2
      17      -49        5      0.2
      19    -51.5        5      0.2
    20.5      -53        6      0.2
      23    -54.5      7.5      0.2
    23.5      -56        8      0.2
      25      -58        8      0.2
    27.5    -61.5        8      0.2
      30    -63.5      8.5      0.2
      33      -65      8.5      0.2

    2 8
      -6     -6.5        6      3.4
    -7.5     -4.5      5.5        2
      -8       -2      6.5      1.2
   -10.5       -1      5.5      1.7
     -13       -1        5      1.7
     -15        0        5      1.7
   -17.5        0      4.5      1.7
   -17.5        1      4.5      1.7

    11 34
   -17.5        1      4.5      1.7
   -18.5      2.5        4      0.8
   -20.5      3.5      4.5      0.6
     -22      5.5        3      0.6
     -25        6      4.5      0.6
     -27      7.5        3      0.6
   -30.5        8        3      0.6
     -35     11.5      3.5      0.6
     -37       15        5      0.4
     -38     18.5        5      0.4
     -36     21.5        5      0.4
   -34.5     25.5      4.5      0.4
     -34     29.5        6      0.4
   -34.5     32.5        6      0.4
     -37     35.5      4.5      0.4
   -38.5       37      4.5      0.2
   -39.5       38      4.5      0.2
   -40.5     40.5        6      0.2
   -40.5       44        6      0.2
   -42.5       47      5.5      0.2
   -42.5       49      6.5      0.2
     -45     51.5      6.5      0.2
   -46.5       54      6.5      0.2
     -49       55      6.5      0.2
   -50.5       58        7      0.2
   -51.5       63        5      0.2
   -53.5       64        6      0.2
   -53.5     66.5      6.5      0.2
   -55.5     68.5        5      0.2
   -56.5     72.5        5      0.2
   -58.5       76      5.5      0.2
   -59.5       78        6      0.2
     -62     78.5        6      0.2
   -63.5       78        7      0.2

    2 7
   -17.5        1      4.5      1.7
   -19.5     -0.5        5      0.7
     -21     -1.5        5      0.7
   -23.5     -0.5        5      0.7
     -26     -1.5        5      0.7
   -26.5     -4.5      5.5      0.7
   -29.5       -5      5.5      1.1

    11 24
   -29.5       -5      5.5      1.1
   -29.5     -6.5        4      0.5
   -29.5       -9        4      0.5
   -30.5    -12.5        4      0.4
     -30      -16        4      0.4
   -30.5      -20        4      0.3
     -29    -24.5        4      0.3
   -28.5      -28        4      0.3
   -27.5    -31.5        4      0.2
     -27      -37      4.5      0.2
   -29.5    -46.5      5.5      0.2
   -30.5    -48.5      5.5      0.2
     -31    -53.5      5.5      0.2
     -29      -58      5.5      0.2
     -29    -59.5      5.5      0.2
     -29      -66      6.5      0.2
     -30    -68.5        3      0.2
     -29      -73      2.5      0.2
     -29    -76.5        1      0.2
   -29.5      -81        1      0.2
     -31      -86      2.5      0.2
     -33      -93      1.5      0.2
   -34.5    -98.5        3      0.2
   -36.5     -102        1      0.2

    8 20
   -29.5       -5      5.5      1.1
   -30.5       -4      3.5      0.4
     -34       -4        5      0.4
     -36     -2.5      5.5      0.4
   -39.5     -2.5        6      0.4
     -41        0        6      0.2
   -42.5      3.5        6      0.2
     -43        6      5.5      0.2
     -45       10      7.5      0.2
     -47       15      7.5      0.2
     -49     21.5      5.5      0.2
     -49       26      4.5      0.2
     -52       29      3.5      0.2
   -53.5     32.5      2.5      0.2
     -55       35      2.5      0.2
   -56.5       36      3.5      0.2
     -57       39      5.5      0.2
     -59       41        5      0.2
     -61     44.5      1.5      0.2
   -63.5       46      1.5      0.2

    1 2
      -5       13        1      4.3
    -4.5     16.5      3.5        3

    5 15
    -4.5     16.5      3.5        3
    -3.5       18      4.5      1.5
    -2.5       20      5.5      1.5
    -2.5     21.5        7      1.5
    -3.5     25.5      8.5      1.5
      -5       28      8.5      1.5
    -5.5     30.5      8.5      1.5
      -6       35      8.5      1.5
    -6.5     38.5      9.5      1.5
      -7       41      9.5      1.5
    -5.5       45     10.5      0.8
      -5       49     10.5      0.8
      -6       52     10.5      0.8
      -4     53.5       11      0.8
    -3.5       55     11.5      0.6

    6 18
    -3.5       55     11.5      0.6
      -4       56       11      0.3
    -3.5     57.5       11      0.3
    -1.5     58.5     12.5      0.3
       0     59.5     12.5      0.3
       1       60     12.5      0.3
     1.5     63.5       13      0.2
       4     64.5       13      0.2
       7     68.5       13      0.2
      10     70.5       13      0.2
      10       74     12.5      0.2
    12.5     74.5       13      0.2
      14     77.5     13.5      0.2
    15.5     80.5     13.5      0.2
    15.5       84     13.5      0.2
    14.5       87     13.5      0.2
      15       91     13.5      0.2
    13.5     95.5       11      0.2

    5 16
    -3.5       55     11.5      0.6
    -3.5     56.5       10      0.6
      -2       59       10      0.6
      -3     61.5       10      0.6
    -2.5     63.5       10      0.6
    -3.5       67       10      0.6
      -4       69       10      0.6
    -5.5       71     10.5      0.6
    -6.5     73.5     10.5      0.6
    -9.5     76.5     10.5      0.6
     -10     79.5     10.5      0.6
     -13       83      9.5      0.6
   -14.5       86       10      0.6
   -14.5     89.5       12      0.6
     -16     92.5       12      0.6
     -15       95       12      0.6

    4 11
     -15       95       12      0.6
   -12.5       96     13.5      0.4
      -9       97     14.5      0.4
    -6.5       98       16      0.4
      -3      101     16.5      0.4
      -2    103.5       18      0.4
     1.5    105.5       19      0.2
     1.5    108.5     19.5      0.2
       3    109.5     19.5      0.2
     4.5    113.5     18.5      0.2
     4.5      117       19      0.1

    4 11
     -15       95       12      0.6
   -16.5     96.5       12      0.3
     -18       98       12      0.3
     -19    101.5       12      0.3
     -20    103.5       12      0.3
     -21    107.5       11      0.3
     -21      110     13.5      0.3
   -22.5    114.5       15      0.3
     -24      117       15      0.3
     -24      120       15      0.3
   -25.5    121.5       15      0.1

    2 4
   -25.5    121.5       15      0.1
   -25.5    124.5     15.5      0.1
   -26.5    129.5     17.5      0.1
   -27.5    132.5       18      0.1

    2 7
   -25.5    121.5       15      0.1
     -27    121.5       15      0.1
     -30      125     17.5      0.1
     -31      128     17.5      0.1
     -34      128     17.5      0.1
     -34      131     17.5      0.1
   -36.5      132     19.5      0.1

    2 7
    -4.5     16.5      3.5        3
      -7     17.5        5        1
      -8     18.5        5        1
      -9     20.5        6      1.4
     -11       23      6.5      1.4
   -11.5       25      6.5      1.4
     -11     26.5      5.5      1.4

    11 35
     -11     26.5      5.5      1.4
     -13     27.5      5.5      0.8
   -15.5     27.5      5.5      0.8
   -15.5     30.5      5.5      0.8
   -18.5       33      6.5      0.8
     -20     36.5      6.5      0.8
   -21.5       38      6.5      0.6
     -23     41.5      6.5      0.6
     -25       43      6.5      0.6
     -26     46.5      6.5      0.6
   -27.5     46.5      6.5      0.6
     -29     46.5      6.5      0.6
     -30     49.5        5      0.5
     -34       50        5      0.5
     -36     51.5        6      0.5
   -37.5     50.5      7.5      0.3
     -40     51.5      7.5      0.3
     -41       50      7.5      0.3
   -43.5       50        9      0.3
     -46     50.5        9      0.3
     -49     50.5      9.5      0.3
   -51.5       52        8      0.3
   -54.5     53.5        8      0.3
   -56.5     53.5        7      0.3
   -58.5       57      6.5      0.3
     -60       59      5.5      0.3
     -61       60        4      0.3
   -62.5       64        4      0.3
     -63     66.5        5      0.3
   -64.5       67        5      0.3
     -66     69.5        5      0.3
   -68.5     72.5        5      0.3
     -68       76        6      0.3
   -69.5       81        7      0.1
     -72     85.5        8      0.1

    2 7
     -11     26.5      5.5      1.4
   -10.5     28.5        7      0.8
      -9     30.5        7      0.8
      -9     32.5        7      0.8
   -10.5     35.5        7      0.8
   -10.5     39.5        7      0.8
     -12       42      7.5      0.8

    5 15
     -12       42      7.5      0.8
   -11.5       45        6      0.6
   -10.5       49      7.5      0.6
    -7.5     49.5      7.5      0.6
    -5.5     51.5      7.5      0.6
    -2.5     51.5      7.5      0.6
    -1.5       49        8      0.6
     1.5     48.5        7      0.6
     2.5       48      7.5      0.6
     5.5     47.5      7.5      0.6
     8.5       47        7      0.6
       9     45.5        7      0.6
      12       47      7.5      0.6
      16       45        9      0.4
    18.5       47        9      0.4

    5 11
    18.5       47        9      0.4
    16.5     49.5        9      0.1
      16     53.5        9      0.1
    17.5       58        8      0.1
    18.5       62      9.5      0.1
    18.5     68.5        8      0.1
    16.5     74.5      8.5      0.1
      15     79.5      8.5      0.1
      13       84      8.5      0.1
     8.5       86        9      0.1
       6       88        9      0.1

    7 20
    18.5       47        9      0.4
    21.5     46.5        9      0.4
    24.5     46.5      9.5      0.4
    24.5     50.5      9.5      0.4
    26.5       51       10      0.4
      28     53.5       10      0.4
    29.5     54.5       10      0.4
      31     56.5      9.5      0.4
      33       57      9.5      0.4
    33.5       61      9.5      0.3
    33.5       64       10      0.3
      32       67     10.5      0.3
      28       70     10.5      0.3
    27.5     72.5       13      0.3
    26.5     76.5     11.5      0.3
    25.5       80       12      0.3
      24       83       12      0.3
    22.5       87        9      0.3
      26       92      7.5      0.1
      25     96.5      9.5      0.1

    7 19
     -12       42      7.5      0.8
   -14.5     43.5        8      0.4
   -17.5       43        8      0.4
     -19     45.5      9.5      0.4
   -21.5     46.5        8      0.4
   -23.5       47        8      0.4
   -24.5       50        8      0.4
     -27       52        8      0.4
   -30.5       54        8      0.4
     -33       54      9.5      0.4
     -34       56      9.5      0.4
     -38     54.5       10      0.4
   -40.5     55.5       10      0.4
   -42.5     57.5      7.5      0.2
     -45     60.5      9.5      0.2
   -46.5       64      9.5      0.2
   -47.5       67      9.5      0.2
     -48       69       11      0.1
     -51     73.5      8.5      0.1

    18 51
      -7       -3     -0.5      1.1
      -8     -2.5       -2      1.1
   -10.5     -2.5     -2.5      1.1
   -13.5       -2     -1.5        1
   -16.5       -3       -2      0.8
     -18     -2.5        0      0.8
   -20.5       -3       -1      0.8
     -25       -5      0.5      0.8
     -27       -7      0.5      0.8
   -31.5     -7.5       -2      0.5
   -32.5       -8     -2.5      0.5
     -35     -7.5     -2.5      0.5
   -37.5      -10     -2.5      0.5
   -42.5    -12.5       -3      0.3
   -47.5    -15.5       -3      0.3
     -53    -17.5       -3      0.3
     -56      -18       -3      0.3
     -63    -20.5       -3      0.3
     -73    -22.5     -2.5      0.3
     -74      -24     -2.5      0.3
     -80    -25.5     -2.5      0.3
   -86.5      -28       -2      0.3
     -88      -27       -2      0.3
   -90.5    -29.5       -2      0.3
   -93.5    -29.5       -2      0.3
     -95    -31.5       -2      0.3
   -99.5    -33.5     -1.5      0.3
    -100    -36.5     -3.5      0.3
  -104.5    -38.5       -3      0.3
    -105    -39.5       -3      0.3
    -108      -40       -3      0.3
    -108    -41.5       -3      0.3
  -111.5      -42       -3      0.3
  -112.5      -45     -2.5      0.3
    -116    -46.5     -2.5      0.3
    -119    -47.5       -2      0.3
    -120      -49       -2      0.3
    -125      -50       -2      0.3
    -126      -52       -2      0.3
  -129.5      -52       -1      0.3
  -131.5      -51      0.5      0.3
    -132      -53        0      0.3
  -133.5      -54        0      0.3
    -136      -53      1.5      0.3
  -137.5    -55.5      0.5      0.3
    -139      -56      0.5      0.3
    -141      -58      0.5      0.3
    -144      -60      0.5      0.3
    -147    -63.5        1      0.3
    -151    -63.5       -1      0.3
    -151    -63.5       -1      0.3


CONNECTIONS:
        0    1
        1    1
        2    1
        3    1
        3    1
        5    1
        5    1
        2    1
        1    1
        9    1
       10    1
       10    1
        9    1
       13    1
       13    1
       15    1
       15    1
       17    1
       17    1
       19    1
       19    1
        0    1
       22    1
       23    1
       24    1
       24    1
       23    1
       27    1
       27    1
       22    1

        0    1
        1    1
        1    1
        3    1
        3    1
        5    1
        5    1
        0    1
        8    1
        8    1
       10    1
       10    1
       12    1
       12    1

        0    1
        1    1
        1    1
        3    1
        3    1
        5    1
        5    1
        0    1
        8    1
        8    1

        0    1
        1    1
        2    1
        2    1
        4    1
        4    1
        1    1
        7    1
        7    1
        0    1
       10    1
       10    1
       12    1
       12    1

        0    1
        1    1
        1    1
        3    1
        3    1
        5    1
        5    1
        0    1
        8    1
        8    1
       10    1
       11    1
       11    1
       10    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")
}


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