Summary statistics for vsoe dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |    105,049    28.16077    16.44685          1         56
     st_case |    105,049    282192.8    164444.7      10001     560121
      veh_no |    105,049    1.282087    .7002609          1         26
   veventnum |    105,049    2.303097    1.605294          1         15
         soe |    105,049    33.86081    25.29318          1         99
-------------+---------------------------------------------------------
         aoi |    105,049    30.38294    28.29705          0         99

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