Summary statistics for veh_aux dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
        year |        774        1987           0       1987       1987
      veh_no |        774     1.31137    .5843584          1          5
     st_case |        774    430291.5     169.601     430001     430593
      a_body |        774    2.394057    2.561738          1          9
      a_imp1 |        774    2.583979    1.362993          1          7
-------------+---------------------------------------------------------
      a_imp2 |        774    2.595607     1.37169          1          7
     a_vroll |        774    1.925065    .2634573          1          2
     a_lic_s |        774    1.459948    .8498218          1          4
     a_lic_c |        774    1.334625    .6274572          1          3
     a_cdl_s |        774           3           0          3          3
-------------+---------------------------------------------------------
    a_mc_l_s |        774    3.863049    .6034433          1          4
     a_spveh |        774    1.609819    .4881061          1          2
      a_sbus |        774           3           0          3          3
    a_mod_yr |        774    2580.687    2112.734       1957       9999
     a_drdis |        774    1.997416       .0508          1          2
-------------+---------------------------------------------------------
     a_drdro |        774    1.997416       .0508          1          2

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