Summary statistics for mi_to_county variable in sf12010countydistancemiles dataset :

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
mi_to_county | 10,371,620    952.6507    655.0073   1.407852   6273.088

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