Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |        647        2003           0       2003       2003
      veh_no |        647    1.313756    .5554509          1          4
     st_case |        647    430238.3    136.9586     430001     430472
      a_body |        647    2.715611    2.506238          1          9
      a_imp1 |        647    2.581144    1.116642          1          5
-------------+---------------------------------------------------------
      a_imp2 |        647    2.686244    1.264732          1          6
     a_vroll |        647    1.938176    .2410216          1          2
     a_lic_s |        647     1.48068    .9552758          1          4
     a_lic_c |        647    1.255023    .5604636          1          3
     a_cdl_s |        647    2.054096    .2583187          1          3
-------------+---------------------------------------------------------
    a_mc_l_s |        647    3.743431    .8247427          1          4
     a_spveh |        647    1.667697    .4714034          1          2
      a_sbus |        647           3           0          3          3
    a_mod_yr |        647    2476.173    1906.778       1969       9999
     a_drdis |        647    1.995363    .0679885          1          2
-------------+---------------------------------------------------------
     a_drdro |        647    1.993818    .0784453          1          2

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