Frequencies for first 10,000 rows of fmaps variable in natl1989 dataset :

Five Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          7        0.07        0.07
          1 |         18        0.18        0.25
          2 |          7        0.07        0.32
          3 |         10        0.10        0.42
          4 |         15        0.15        0.57
          5 |         33        0.33        0.90
          6 |         67        0.67        1.57
          7 |        153        1.53        3.10
          8 |        614        6.14        9.24
          9 |      7,159       71.59       80.83
         10 |      1,856       18.56       99.39
         99 |         61        0.61      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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