Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     58,729        2004           0       2004       2004
      veh_no |     58,729     1.45601    1.003965          1         42
     st_case |     58,729    271845.5    162003.1      10001     560142
      a_body |     58,729    2.690613    2.161746          1          9
      a_imp1 |     58,729    2.705205    1.340084          1          7
-------------+---------------------------------------------------------
      a_imp2 |     58,729    2.775937    1.404527          1          7
     a_vroll |     58,729    1.809566    .3926468          1          2
     a_lic_s |     58,729    1.369443    .8439106          1          4
     a_lic_c |     58,729    1.182329    .4599773          1          3
     a_cdl_s |     58,729    1.905089    .3822928          1          3
-------------+---------------------------------------------------------
    a_mc_l_s |     58,729    3.807557    .7108176          1          4
     a_spveh |     58,729    1.797494     .401871          1          2
      a_sbus |     58,729    2.995913    .0886007          1          3
    a_mod_yr |     58,729    2144.091    1077.679       1924       9999
     a_drdis |     58,729    1.922117    .2679899          1          2
-------------+---------------------------------------------------------
     a_drdro |     58,729    1.980367    .1387351          1          2

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