Frequencies for first 10,000 rows of fmaps variable in natl1981 dataset :

Five Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         12        0.12        0.12
          1 |         15        0.15        0.27
          2 |          7        0.07        0.34
          3 |         10        0.10        0.44
          4 |         20        0.20        0.64
          5 |         38        0.38        1.02
          6 |         62        0.62        1.64
          7 |        205        2.05        3.69
          8 |        846        8.46       12.15
          9 |      5,156       51.56       63.71
         10 |      3,546       35.46       99.17
         99 |         83        0.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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