Frequencies for first 10,000 rows of reljct1 variable in accident dataset :

relation to |
   junction |
     within |
interchange |
       area |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,441       94.41       94.41
          1 |        551        5.51       99.92
          8 |          4        0.04       99.96
          9 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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