Summary statistics for violatn dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |     48,405    27.90798    16.09812          1         56
     st_case |     48,405    279676.8    160952.8      10001     560139
      veh_no |     48,405    1.423634    .7567147          1         15
    mviolatn |     48,405    8.204111    23.82579          0         99

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