Summary statistics for sf12000placedistancemiles dataset :

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

    Variable |        Obs        Mean    Std. Dev.       Min        Max
-------------+---------------------------------------------------------
      state1 |          0
      place1 |          0
 mi_to_place |643,865,250    1026.912    742.7625    .084375   6420.183
      state2 |          0
      place2 |          0

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