Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     59,292        1990           0       1990       1990
      veh_no |     59,292    1.413951    .8843307          1         38
     st_case |     59,292    271942.8    160678.2      10001     560107
      a_body |     59,292    2.357316    2.153916          1          9
      a_imp1 |     59,292    2.695996    1.374413          1          7
-------------+---------------------------------------------------------
      a_imp2 |     59,292    2.753963    1.418244          1          7
     a_vroll |     59,292    1.830601     .375107          1          2
     a_lic_s |     59,292    1.338713    .7921225          1          4
     a_lic_c |     59,292    1.202068    .4859606          1          3
     a_cdl_s |     59,292           3           0          3          3
-------------+---------------------------------------------------------
    a_mc_l_s |     59,292     3.86047    .5907067          1          4
     a_spveh |     59,292    1.780729    .4137559          1          2
      a_sbus |     59,292    2.996003    .0880865          1          3
    a_mod_yr |     59,292    2144.665    1126.966       1923       9999
     a_drdis |     59,292    1.928321    .2579581          1          2
-------------+---------------------------------------------------------
     a_drdro |     59,292       1.976    .1530499          1          2

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