Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |     56,253        2007           0       2007       2007
      veh_no |     56,253    1.575863    2.905757          1         92
     st_case |     56,253    272644.5    162300.2      10001     560137
      a_body |     56,253    2.858728    2.258346          1          9
      a_imp1 |     56,253    2.732939    1.370464          1          7
-------------+---------------------------------------------------------
      a_imp2 |     56,253     2.81969    1.450958          1          7
     a_vroll |     56,253    1.806108    .3953487          1          2
     a_lic_s |     56,253    1.450589    .9332588          1          4
     a_lic_c |     56,253    1.196932    .4676932          1          3
     a_cdl_s |     56,253    1.907241     .378575          1          3
-------------+---------------------------------------------------------
    a_mc_l_s |     56,253    3.742965    .8091831          1          4
     a_spveh |     56,253    1.786358    .4098805          1          2
      a_sbus |     56,253    2.995894    .0892473          1          3
    a_mod_yr |     56,253    2142.027     1059.72       1924       9999
     a_drdis |     56,253    1.901107    .2985203          1          2
-------------+---------------------------------------------------------
     a_drdro |     56,253    1.983521      .12731          1          2

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