Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     57,347        1996           0       1996       1996
      veh_no |     57,347    1.462413    1.135654          1         47
     st_case |     57,347    275920.6    160499.4      10001     560121
      a_body |     57,347    2.354107    2.045485          1          9
      a_imp1 |     57,347    2.683157    1.346934          1          7
-------------+---------------------------------------------------------
      a_imp2 |     57,347    2.728199    1.381066          1          7
     a_vroll |     57,347    1.823687    .3810892          1          2
     a_lic_s |     57,347     1.27419    .6958661          1          4
     a_lic_c |     57,347    1.177481      .45384          1          3
     a_cdl_s |     57,347    1.914398    .3700027          1          3
-------------+---------------------------------------------------------
    a_mc_l_s |     57,347    3.899838    .5138318          1          4
     a_spveh |     57,347    1.795874    .4030648          1          2
      a_sbus |     57,347      2.9951    .0978996          1          3
    a_mod_yr |     57,347    2140.407    1092.882       1900       9999
     a_drdis |     57,347    1.934539    .2473399          1          2
-------------+---------------------------------------------------------
     a_drdro |     57,347    1.975221    .1554522          1          2

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