Summary statistics for sf12000countydistance100miles dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     county1 |          0
mi_to_county |    147,926    65.77811    23.33045   .9607159   99.99994
     county2 |          0

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