Frequencies for first 10,000 rows of omaps variable in natl1992 dataset :

 One Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          5        0.05        0.05
          1 |         69        0.69        0.74
          2 |         60        0.60        1.34
          3 |         64        0.64        1.98
          4 |        105        1.05        3.03
          5 |        161        1.61        4.64
          6 |        225        2.25        6.89
          7 |        649        6.49       13.38
          8 |      4,240       42.40       55.78
          9 |      4,255       42.55       98.33
         10 |        127        1.27       99.60
         99 |         40        0.40      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015