Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     61,836        1987           0       1987       1987
      veh_no |     61,836    1.408597    .7715361          1         22
     st_case |     61,836    272489.2    159840.7      10001     560114
      a_body |     61,836    2.397244     2.21737          1          9
      a_imp1 |     61,836    2.631121    1.346303          1          7
-------------+---------------------------------------------------------
      a_imp2 |     61,836    2.742949    1.441684          1          7
     a_vroll |     61,836    1.831959     .373906          1          2
     a_lic_s |     61,836    1.355634    .8347612          1          4
     a_lic_c |     61,836    1.191313    .4806395          1          3
     a_cdl_s |     61,836           3           0          3          3
-------------+---------------------------------------------------------
    a_mc_l_s |     61,836    3.833058    .6444576          1          4
     a_spveh |     61,836    1.762048     .425833          1          2
      a_sbus |     61,836    2.995407    .0940277          1          3
    a_mod_yr |     61,836    2166.128    1206.918       1915       9999
     a_drdis |     61,836    1.924494    .2642085          1          2
-------------+---------------------------------------------------------
     a_drdro |     61,836    1.978831    .1439483          1          2

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