Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     58,271        1985           0       1985       1985
      veh_no |     58,271    1.413636    .9569337          1         36
     st_case |     58,271    276224.8    160148.2      10002     560136
      a_body |     58,271    2.507903     2.33443          1          9
      a_imp1 |     58,271    2.627499     1.30997          1          7
-------------+---------------------------------------------------------
      a_imp2 |     58,271    2.721869    1.397191          1          7
     a_vroll |     58,271    1.845944    .3610056          1          2
     a_lic_s |     58,271    1.382163    .8834289          1          4
     a_lic_c |     58,271    1.180673    .4721136          1          3
     a_cdl_s |     58,271           3           0          3          3
-------------+---------------------------------------------------------
    a_mc_l_s |     58,271    3.920921     .269864          3          4
     a_spveh |     58,271    1.760258    .4269296          1          2
      a_sbus |     58,271    2.995555    .0935402          1          3
    a_mod_yr |     58,271    2190.006    1285.768       1909       9999
     a_drdis |     58,271    1.929656    .2557276          1          2
-------------+---------------------------------------------------------
     a_drdro |     58,271    1.979956    .1401529          1          2

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