anchor.diff:  271231908,St. Anthony Park,44.973096,-93.199879
   270370470,Apple Valley,44.7383,-93.2372
   270530963,Minneapolis-Phillips,44.9536,-93.2581
  -270531909,Minneapolis - Bottin,45.014,-93.272
  -270530909,Minneapolis-Lowry Av,45.008,-93.277
  -270530910,Minneapolis-Pacific St,45.014,-93.272
  +270531909,Minneapolis-Bottin,45.0136,-93.2721
  +270530909,Minneapolis-Lowry Av,45.0121,-93.2767
  +270530910,Minneapolis-Pacific St,45.0083,-93.277
   271713201,St. Michael,45.2108,-93.6686
   271453052,St. Cloud,45.55,-94.1333
   271095008,Rochester,43.9947,-92.449700000000007
  
positive.code: 271390505,Shakopee,44.789398,-93.512497
  270317810,Grand Portage,47.9721,-89.6908
  270072304,Red Lake Nation,47.878159,-95.029172
  270370480,Lakeville - Near Road,44.706123,-93.285803
  270177417,Fond du Lac,46.713694,-92.511722
  551010020,Racine-Payne and Dolan,42.7783,-87.805
  191370002,Viking Lake State Park,40.970001,-95.044998
  
negative.code: 191130031,SCOTTISH RITE,41.983334,-91.662781
  191390015,"Muscatine, Garfield School",41.401402,-91.0681
  550370001,POPPLE RVR,45.7956,-88.4006
  271636015,Stillwater-Wash. County Garage,45.117199,-92.855003
  270530969,Minneapolis-Wenonah School,44.9006,-93.238297
  191139028,KIRKWOOD2,41.9106,-91.6519
  191130041,TAIT CUMMINS,41.948669,-91.639543
  550270007,MAYVILLE,43.435001,-88.527802
  