Summary statistics for vsoe dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
       state |        574          43           0         43         43
     st_case |        574    430138.1    82.94222     430001     430288
      veh_no |        574    1.268293    .5425731          1          4
   veventnum |        574    1.444251     .746973          1          5
         soe |        574    26.85192    25.85003          1         79
-------------+---------------------------------------------------------
         aoi |        574    16.95122    17.69346          0         55

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