Frequencies for first 10,000 rows of fmaps variable in linkco1991us_num dataset :

Five Minute |
Apgar Score |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        294        2.94        2.94
          1 |      1,103       11.03       13.97
          2 |        316        3.16       17.13
          3 |        211        2.11       19.24
          4 |        220        2.20       21.44
          5 |        258        2.58       24.02
          6 |        335        3.35       27.37
          7 |        376        3.76       31.13
          8 |        539        5.39       36.52
          9 |      1,576       15.76       52.28
         10 |        144        1.44       53.72
         99 |      4,628       46.28      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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