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

    seating |
   position |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      1,014       10.14       10.14
         11 |      5,781       57.81       67.95
         12 |         39        0.39       68.34
         13 |      1,545       15.45       83.79
         19 |          4        0.04       83.83
         21 |        481        4.81       88.64
         22 |        200        2.00       90.64
         23 |        525        5.25       95.89
         28 |         10        0.10       95.99
         29 |         18        0.18       96.17
         31 |         19        0.19       96.36
         32 |         14        0.14       96.50
         33 |         19        0.19       96.69
         38 |          1        0.01       96.70
         39 |         11        0.11       96.81
         41 |          2        0.02       96.83
         42 |          1        0.01       96.84
         43 |          2        0.02       96.86
         50 |         17        0.17       97.03
         51 |        151        1.51       98.54
         52 |         13        0.13       98.67
         55 |          9        0.09       98.76
         98 |         24        0.24       99.00
         99 |        100        1.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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