Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |        749        1988           0       1988       1988
      veh_no |        749    1.317757    .5877241          1          5
     st_case |        749    430308.3    171.5527     430002     430600
      a_body |        749    2.559413    2.692485          1          9
      a_imp1 |        749    2.528705    1.197498          1          7
-------------+---------------------------------------------------------
      a_imp2 |        749     2.93992    1.582109          1          7
     a_vroll |        749    1.913218     .281704          1          2
     a_lic_s |        749    1.502003    .8569057          1          4
     a_lic_c |        749    1.385848    .6535485          1          3
     a_cdl_s |        749           3           0          3          3
-------------+---------------------------------------------------------
    a_mc_l_s |        749    3.871829     .575451          1          4
     a_spveh |        749    1.626168    .4841431          1          2
      a_sbus |        749     2.99733    .0730784          1          3
    a_mod_yr |        749     2601.35     2144.67       1960       9999
     a_drdis |        749    1.995995    .0632031          1          2
-------------+---------------------------------------------------------
     a_drdro |        749    1.998665    .0365392          1          2

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