Frequencies for first 10,000 rows of ejection variable in person dataset :

   ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,412       74.12       74.12
          1 |        905        9.05       83.17
          2 |        202        2.02       85.19
          3 |         28        0.28       85.47
          8 |      1,424       14.24       99.71
          9 |         29        0.29      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016