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

Five Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          6        0.06        0.06
          1 |         15        0.15        0.21
          2 |         21        0.21        0.42
          3 |         14        0.14        0.56
          4 |         26        0.26        0.82
          5 |         42        0.42        1.24
          6 |         76        0.76        2.00
          7 |        182        1.82        3.82
          8 |        788        7.88       11.70
          9 |      5,956       59.56       71.26
         10 |      2,789       27.89       99.15
         99 |         85        0.85      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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