Summary statistics for sf12010placedistance100miles dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      state1 |          0
      place1 |          0
 mi_to_place | 14,262,582    63.17568       25.08   .0648001   99.99999
      state2 |          0
      place2 |          0

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