Summary statistics for vsoe dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |    115,275    27.81504    16.36618          1         56
     st_case |    115,275    278822.4    163603.5      10001     560130
      veh_no |    115,275    1.384246    1.450421          1         58
   veventnum |    115,275     2.28596    1.615067          1         21
         soe |    115,275    33.15552    25.19701          1         99
-------------+---------------------------------------------------------
         aoi |    115,275    32.71681    29.87498          0         99

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