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

RELATION TO |
   JUNCTION |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,933       69.33       69.33
          2 |      1,786       17.86       87.19
          3 |        572        5.72       92.91
          4 |         93        0.93       93.84
          5 |         29        0.29       94.13
          6 |         37        0.37       94.50
          7 |         12        0.12       94.62
          8 |        108        1.08       95.70
          9 |         59        0.59       96.29
         10 |         41        0.41       96.70
         11 |         28        0.28       96.98
         12 |          3        0.03       97.01
         13 |        137        1.37       98.38
         14 |          5        0.05       98.43
         15 |        140        1.40       99.83
         19 |          2        0.02       99.85
         99 |         15        0.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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