Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |        638        1983           0       1983       1983
      veh_no |        638    1.266458    .5022746          1          3
     st_case |        638    430240.5    142.4818     430001     430494
      a_body |        638    2.512539    2.655937          1          9
      a_imp1 |        638    2.783699    1.610479          1          7
-------------+---------------------------------------------------------
      a_imp2 |        638    2.990596    1.712427          1          7
     a_vroll |        638    1.910658    .2854601          1          2
     a_lic_s |        638    1.462382    .8521809          1          4
     a_lic_c |        638    1.346395     .656386          1          3
     a_cdl_s |        638           3           0          3          3
-------------+---------------------------------------------------------
    a_mc_l_s |        638    3.954545    .2084623          3          4
     a_spveh |        638    1.677116    .4679457          1          2
      a_sbus |        638    2.995298    .0884712          1          3
    a_mod_yr |        638    2730.227    2343.766       1961       9999
     a_drdis |        638           2           0          2          2
-------------+---------------------------------------------------------
     a_drdro |        638    1.992163    .0882484          1          2

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