Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     57,918        2001           0       2001       2001
      veh_no |     57,918    1.496202    1.634152          1         57
     st_case |     57,918    275997.4    161285.3      10001     560155
      a_body |     57,918    2.542767    2.105459          1          9
      a_imp1 |     57,918    2.668324    1.330033          1          7
-------------+---------------------------------------------------------
      a_imp2 |     57,918     2.72335     1.38022          1          7
     a_vroll |     57,918    1.815809    .3876436          1          2
     a_lic_s |     57,918    1.329034    .7879056          1          4
     a_lic_c |     57,918    1.182327     .463727          1          3
     a_cdl_s |     57,918    1.907559    .3831191          1          3
-------------+---------------------------------------------------------
    a_mc_l_s |     57,918    3.847319    .6347995          1          4
     a_spveh |     57,918    1.802169    .3983678          1          2
      a_sbus |     57,918    2.995407    .0946429          1          3
    a_mod_yr |     57,918    2129.002    1033.054       1930       9999
     a_drdis |     57,918    1.928502    .2576565          1          2
-------------+---------------------------------------------------------
     a_drdro |     57,918    1.978884    .1437725          1          2

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