Frequencies for first 10,000 rows of fmaps variable in natl2001 dataset :

Five Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |          5        0.05        0.05
          1 |         17        0.17        0.22
          2 |          6        0.06        0.28
          3 |          9        0.09        0.37
          4 |         12        0.12        0.49
          5 |         21        0.21        0.70
          6 |         51        0.51        1.21
          7 |        125        1.25        2.46
          8 |        599        5.99        8.45
          9 |      7,993       79.93       88.38
         10 |      1,146       11.46       99.84
         99 |         16        0.16      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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