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

    Seating |
   Position |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        781        7.81        7.81
          1 |      5,583       55.83       63.64
          2 |        390        3.90       67.54
          3 |      1,832       18.32       85.86
          4 |        367        3.67       89.53
          5 |        131        1.31       90.84
          6 |        296        2.96       93.80
          7 |          5        0.05       93.85
          8 |          4        0.04       93.89
          9 |          5        0.05       93.94
         10 |         10        0.10       94.04
         11 |         28        0.28       94.32
         12 |          3        0.03       94.35
         13 |         96        0.96       95.31
         14 |         23        0.23       95.54
         15 |         75        0.75       96.29
         99 |        371        3.71      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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