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

Non-Motoris |
 t Location |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,202       92.02       92.02
          2 |        180        1.80       93.82
          3 |        610        6.10       99.92
          4 |          8        0.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016