Summary statistics for veh_aux dataset :

by Jean Roth , jroth@nber.org , 22 Oct 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     44,858        2014           0       2014       2014
     st_case |     44,858    279777.3    162912.2      10001     560131
      veh_no |     44,858    1.443444    1.003672          1         40
      a_body |     44,858    2.935574    2.311082          1          9
      a_imp1 |     44,858    2.759887     1.46288          1          7
-------------+---------------------------------------------------------
      a_imp2 |          0
     a_vroll |     44,858    1.830532     .375169          1          2
     a_lic_s |     44,858    1.481475    .9683571          1          4
     a_lic_c |     44,858    1.202684    .4750079          1          3
     a_cdl_s |     44,858    1.905903     .384852          1          3
-------------+---------------------------------------------------------
    a_mc_l_s |     44,858     3.71704    .8417537          1          4
     a_spveh |     44,858    1.813344    .3896392          1          2
      a_sbus |     44,858    2.995831    .0906022          1          3
    a_mod_yr |     44,858    2173.133    1151.156       1927       9999
     a_drdis |     44,858    1.968724    .1740659          1          2
-------------+---------------------------------------------------------
     a_drdro |     44,858    1.983437    .1276299          1          2

by Jean Roth , jroth@nber.org , 22 Oct 2016