Frequencies for first 10,000 rows of omaps variable in natl1983 dataset :

 One Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          7        0.07        0.07
          1 |         60        0.60        0.67
          2 |         75        0.75        1.42
          3 |         87        0.87        2.29
          4 |        110        1.10        3.39
          5 |        174        1.74        5.13
          6 |        328        3.28        8.41
          7 |        838        8.38       16.79
          8 |      3,107       31.07       47.86
          9 |      4,734       47.34       95.20
         10 |        393        3.93       99.13
         99 |         87        0.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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