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

   ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,362       73.62       73.62
          1 |        758        7.58       81.20
          2 |        187        1.87       83.07
          3 |         14        0.14       83.21
          7 |          1        0.01       83.22
          8 |      1,639       16.39       99.61
          9 |         39        0.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016