Summary statistics for sf12000countydistance1miles dataset :

by Jean Roth , jroth@nber.org , 4 Jan 2016

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
     county1 |          0
 countyname1 |          0
mi_to_county |          2    .9607159           0   .9607159   .9607159
     county2 |          0
 countyname2 |          0

by Jean Roth , jroth@nber.org , 4 Jan 2016