Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     54,911        1994           0       1994       1994
      veh_no |     54,911    1.414161    .6876271          1         15
     st_case |     54,911    271482.1    160241.1      10001     560135
      a_body |     54,911    2.340587    2.066498          1          9
      a_imp1 |     54,911    2.673854    1.340677          1          7
-------------+---------------------------------------------------------
      a_imp2 |     54,911    2.734698    1.399437          1          7
     a_vroll |     54,911    1.826938    .3783042          1          2
     a_lic_s |     54,911    1.292346    .7251244          1          4
     a_lic_c |     54,911    1.187959    .4695243          1          3
     a_cdl_s |     54,911    1.919197    .3730708          1          3
-------------+---------------------------------------------------------
    a_mc_l_s |     54,911    3.889166    .5360347          1          4
     a_spveh |     54,911    1.796744    .4024252          1          2
      a_sbus |     54,911    2.995939    .0895256          1          3
    a_mod_yr |     54,911    2145.875    1119.177       1923       9999
     a_drdis |     54,911    1.938592    .2400802          1          2
-------------+---------------------------------------------------------
     a_drdro |     54,911     1.97363    .1602343          1          2

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