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

   Ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,532       85.32       85.32
          1 |      1,122       11.22       96.54
          2 |        181        1.81       98.35
          9 |        165        1.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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