Frequencies for first 10,000 rows of omaps variable in natl1988 dataset :

 One Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          8        0.08        0.08
          1 |         51        0.51        0.59
          2 |         54        0.54        1.13
          3 |         81        0.81        1.94
          4 |        108        1.08        3.02
          5 |        172        1.72        4.74
          6 |        265        2.65        7.39
          7 |        768        7.68       15.07
          8 |      3,550       35.50       50.57
          9 |      4,698       46.98       97.55
         10 |        191        1.91       99.46
         99 |         54        0.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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