Frequencies for first 10,000 rows of fmaps variable in natl1985 dataset :

Five Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          9        0.09        0.09
          1 |         21        0.21        0.30
          2 |         19        0.19        0.49
          3 |         14        0.14        0.63
          4 |         17        0.17        0.80
          5 |         40        0.40        1.20
          6 |         69        0.69        1.89
          7 |        171        1.71        3.60
          8 |        719        7.19       10.79
          9 |      6,219       62.19       72.98
         10 |      2,648       26.48       99.46
         99 |         54        0.54      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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