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

   Ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,491       84.91       84.91
          1 |      1,193       11.93       96.84
          2 |        233        2.33       99.17
          9 |         83        0.83      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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