anchor.diff:  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
  +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
  
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: 191630019,"Davenport, Black Hawk",41.516399,-90.618896
  191137040,PUBLIC HEALTH 3,41.9767,-91.6875
  460990007,HILLTOP,43.5375,-96.6819
  270531905,Minneapolis-Harrison,44.981393,-93.300703
  270531906,Minneapolis-Lyndale,44.946341,-93.277353
  271377549,Duluth-Michigan St,46.77107,-92.11732
  271231903,St. Paul - Westside,44.927318,-93.067534
  270213410,Leech Lake Nation: Cass Lake,47.38443,-94.60166
  