Frequencies for first 10,000 rows of a_loc variable in per_aux dataset :

Non-Motoris |
 t Location |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,148       91.48       91.48
          2 |        154        1.54       93.02
          3 |        692        6.92       99.94
          4 |          6        0.06      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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