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

    Seating |
   Position |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        875        8.75        8.75
          1 |      5,462       54.62       63.37
          2 |        300        3.00       66.37
          3 |      1,876       18.76       85.13
          4 |        360        3.60       88.73
          5 |        145        1.45       90.18
          6 |        305        3.05       93.23
          7 |         10        0.10       93.33
          8 |         11        0.11       93.44
          9 |          8        0.08       93.52
         10 |         43        0.43       93.95
         11 |         95        0.95       94.90
         13 |        216        2.16       97.06
         14 |         18        0.18       97.24
         15 |          6        0.06       97.30
         99 |        270        2.70      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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