age    length    sex  weight chest headlen headwid month neck
       19    53.0       1     80    26    11.0     5.5     7 16.0
       55    67.5       1    344    45    16.5     9.0     7 28.0
       81    72.0       1    416    54    15.5     8.0     9 31.0
      115    72.0       1    348    49    17.0    10.0     7 31.5
      104    62.0       2    166    35    15.5     6.5     8 22.0
      100    70.0       2    220    41    13.0     7.0     4 21.0
       56    73.5       1    262    41    15.0     7.5     7 26.5
       51    68.5       1    360    49    13.5     8.0     4 27.0
       57    64.0       2    204    38    13.5     7.0     9 20.0
      53    58.0       2    144    31    12.5     6.0     5 18.0
      68    73.0       1    332    44    16.0     9.0     8 29.0
       8    37.0       1     34    19     9.0     4.5     8 13.0
      44    63.0       2    140    32    12.5     4.5     8 10.5
      32    67.0       1    180    37    14.0     5.0     8 21.5
      20    52.0       2    105    29    11.5     5.0     8 17.5
      32    59.0       1    166    33    13.0     8.0     8 21.5
      45    64.0       1    204    39    13.5     7.0     9 24.0
       9    36.0       2     26    19     9.0     4.5     9 12.0
      21    59.0       1    120    30    13.0     6.0     9 19.0
     177    72.0       1    436    48    16.0     9.5     9 30.0
      57    57.5       2    125    32    12.5     5.0     9 19.02
       81    61.0       2    132    33    13.0     5.0     9 20.0
      21    54.0       1     90    28    13.0     5.0     9 17.0
       9    40.0       1     40    23    10.0     4.0     9 13.0
      45    63.0       1    220    42    16.0     6.0     9 24.0
       9    43.0       1     46  23.0    10.0     4.0     9 13.5
      33    66.5       1    154  34.0    13.5     6.0     9 22.0
      57    60.5       2    116  31.0    13.0     5.5     9 17.5
      45    60.0       2    182  34.5    13.0     6.5     9 21.0
      21    61.0       1    150  34.0    14.5     5.5     9 20.0
      10    40.0       1     65  26.0     9.5     4.5    10 16.0
      82    64.0       2    356  48.0    13.5     6.5    10 28.0
      70    65.0       2    316  48.0    14.5     6.5    10 26.0
      10    49.0       1     94  29.0    11.0     5.0    10 17.0
      10    47.0       1     86  29.5    11.5     5.0    10 17.0
      34    59.0       1    150  35.0    13.0     7.0    10 21.0
      34    72.0       1    270  44.5    16.5     6.5    10 27.0
      34    65.0       1    202  39.0    14.0     5.5    10 24.0
      58    63.0       2    202  40.0    13.5     6.5    10 21.5
      58    70.5       1    365  50.0    15.5     7.0    10 28.0
      11    48.0       1     79  31.0    11.5     6.0    11 16.5
      23    50.0       1    148  38.0    12.0     6.5    11 19.0
      70    76.5       1    446  55.0    15.5     7.0    10 28.0
      11    46.0       2     62  27.0     9.0     5.0    11 15.0
      83    61.5       2    236  44.0    14.5     7.0    11 23.0
      35    63.5       1    212  44.0    13.5     8.5    11 23.0
      16    48.0       1     60  26.0    10.0     4.0     4 15.5
      16    41.0       1     64  26.0    10.0     5.0     4 15.0
      17    53.0       1    114  30.5    11.5     5.0     5 17.0
      17    52.5       2     76  28.0    11.5     5.0     5 15.0
      17    46.0       2     48  23.0    11.0     4.5     5 13.0
       8    43.5       2     29  24.0    10.0     4.5     8 10.0
      83    75.0       1    514  54.0    15.5     8.0    11 30.5
      18    57.3       1    140  32.8    12.5     8.5     6 18.0