Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     52,227        1992           0       1992       1992
      veh_no |     52,227    1.416279    .8859295          1         38
     st_case |     52,227    272996.1    160337.2      10001     560099
      a_body |     52,227    2.297624    2.076311          1          9
      a_imp1 |     52,227    2.676949    1.344355          1          7
-------------+---------------------------------------------------------
      a_imp2 |     52,227    2.753748     1.40948          1          7
     a_vroll |     52,227    1.827101    .3781636          1          2
     a_lic_s |     52,227    1.305493    .7465677          1          4
     a_lic_c |     52,227    1.189423    .4699657          1          3
     a_cdl_s |     52,227           3           0          3          3
-------------+---------------------------------------------------------
    a_mc_l_s |     52,227    3.880522    .5518783          1          4
     a_spveh |     52,227    1.784479     .411187          1          2
      a_sbus |     52,227     2.99596    .0881858          1          3
    a_mod_yr |     52,227    2133.848    1083.702       1926       9999
     a_drdis |     52,227     1.93063    .2540851          1          2
-------------+---------------------------------------------------------
     a_drdro |     52,227    1.975836    .1535588          1          2

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