Summary statistics for gaz1990countydistance50miles dataset :

by Jean Roth , jroth@nber.org , 29 Mar 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     county1 |          0
mi_to_county |     34,886     35.1002    9.800394   1.341494   49.99916
     county2 |          0
        name |          0

by Jean Roth , jroth@nber.org , 29 Mar 2016