Frequencies for first 10,000 rows of route variable in accident dataset :

      ROUTE |
    SIGNING |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      1,287       12.87       12.87
          2 |      1,458       14.58       27.45
          3 |      2,614       26.14       53.59
          4 |      1,699       16.99       70.58
          5 |         75        0.75       71.33
          6 |      2,383       23.83       95.16
          7 |         13        0.13       95.29
          8 |        448        4.48       99.77
          9 |         23        0.23      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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