Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     57,060        1997           0       1997       1997
      veh_no |     57,060    1.433754    .8636173          1         37
     st_case |     57,060    277293.4    159690.7      10001     560118
      a_body |     57,060    2.371644    2.029467          1          9
      a_imp1 |     57,060     2.68824    1.350383          1          7
-------------+---------------------------------------------------------
      a_imp2 |     57,060    2.737434    1.390772          1          7
     a_vroll |     57,060    1.823554    .3812024          1          2
     a_lic_s |     57,060    1.270785     .695456          1          4
     a_lic_c |     57,060    1.173922    .4525544          1          3
     a_cdl_s |     57,060    1.908325       .3782          1          3
-------------+---------------------------------------------------------
    a_mc_l_s |     57,060    3.898913    .5182813          1          4
     a_spveh |     57,060    1.798808    .4008945          1          2
      a_sbus |     57,060    2.995636    .0926611          1          3
    a_mod_yr |     57,060    2138.818    1084.035       1926       9999
     a_drdis |     57,060    1.927427    .2594361          1          2
-------------+---------------------------------------------------------
     a_drdro |     57,060    1.977147    .1494365          1          2

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