Frequencies for first 10,000 rows of first_mo variable in vehicle dataset :

      FIRST |
ACCIDENT-MO |
        NTH |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,343       53.43       53.43
          1 |        313        3.13       56.56
          2 |        327        3.27       59.83
          3 |        372        3.72       63.55
          4 |        326        3.26       66.81
          5 |        348        3.48       70.29
          6 |        354        3.54       73.83
          7 |        355        3.55       77.38
          8 |        349        3.49       80.87
          9 |        350        3.50       84.37
         10 |        366        3.66       88.03
         11 |        366        3.66       91.69
         12 |        328        3.28       94.97
         99 |        441        4.41       99.38
          . |         62        0.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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