Frequencies for first 10,000 rows of fmaps variable in natlterr1997 dataset :

Five Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         22        0.22        0.22
          1 |         10        0.10        0.32
          2 |          4        0.04        0.36
          3 |          9        0.09        0.45
          4 |         11        0.11        0.56
          5 |         18        0.18        0.74
          6 |         39        0.39        1.13
          7 |         97        0.97        2.10
          8 |        455        4.55        6.65
          9 |      8,690       86.90       93.55
         10 |        629        6.29       99.84
         99 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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