Frequencies for first 10,000 rows of fmaps variable in natl1987 dataset :

Five Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          8        0.08        0.08
          1 |         18        0.18        0.26
          2 |          7        0.07        0.33
          3 |         11        0.11        0.44
          4 |         19        0.19        0.63
          5 |         32        0.32        0.95
          6 |         63        0.63        1.58
          7 |        137        1.37        2.95
          8 |        690        6.90        9.85
          9 |      6,645       66.45       76.30
         10 |      2,320       23.20       99.50
         99 |         50        0.50      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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