Frequencies for first 10,000 rows of omaps variable in natl1982 dataset :

 One Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          9        0.09        0.09
          1 |         52        0.52        0.61
          2 |         63        0.63        1.24
          3 |         95        0.95        2.19
          4 |        100        1.00        3.19
          5 |        202        2.02        5.21
          6 |        295        2.95        8.16
          7 |        793        7.93       16.09
          8 |      2,872       28.72       44.81
          9 |      4,939       49.39       94.20
         10 |        512        5.12       99.32
         99 |         68        0.68      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016