Summary statistics for violatn dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |     48,864    28.01302    16.16902          1         56
     st_case |     48,864      280767    161675.4      10001     560113
      veh_no |     48,864    1.410077    .8602594          1         31
    mviolatn |     48,864    6.302083    20.13584          0         99

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