Summary statistics for vsoe dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |        540          43           0         43         43
     st_case |        540    430176.3     102.174     430001     430352
      veh_no |        540    1.242593    .5154755          1          5
   veventnum |        540    1.166667    .4242203          1          3
         soe |        540    16.13333    11.95092          1         43
-------------+---------------------------------------------------------
         aoi |        540    8.505556    4.497986          0         12

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