Summary statistics for violatn dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |     46,433    27.95047    16.22294          1         56
     st_case |     46,433      280101    162198.7      10001     560121
      veh_no |     46,433    1.394009    .7635268          1         26
    mviolatn |     46,433    6.319083    20.36109          0         99

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