Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |        608        1990           0       1990       1990
      veh_no |        608    1.302632    .5420016          1          4
     st_case |        608    430227.9    130.4679     430001     430453
      a_body |        608    2.417763    2.525614          1          9
      a_imp1 |        608    2.472039    1.011894          1          6
-------------+---------------------------------------------------------
      a_imp2 |        608    2.565789    1.166083          1          6
     a_vroll |        608    1.953947    .2097717          1          2
     a_lic_s |        608    1.569079    .8884196          1          4
     a_lic_c |        608    1.430921     .673209          1          3
     a_cdl_s |        608           3           0          3          3
-------------+---------------------------------------------------------
    a_mc_l_s |        608    3.853618    .6128391          1          4
     a_spveh |        608    1.639803    .4804528          1          2
      a_sbus |        608           3           0          3          3
    a_mod_yr |        608    2680.627    2263.417       1963       9999
     a_drdis |        608    1.998355    .0405554          1          2
-------------+---------------------------------------------------------
     a_drdro |        608           2           0          2          2

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