anchor.diff:  815,Caledonia,17,7,7353
   815,Richmond,17,111,6669
   815,Yorkville,17,93,6482
  -815,McHenry,17,111,6400
  +815,Mchenry,17,111,6400
   815,Bolingbrook,17,197,6324
   815,Braceville,17,63,6277
   815,Manlius,17,11,6028
  
positive.code: 469,Grand Prairie,48,113,60284
  469,Grapevine,48,121,53982
  469,Grapevine,48,439,53982
  469,DeSoto,48,113,53568
  469,Rockwall,48,397,44208
  469,Waxahachie,48,139,35340
  469,Cleburne,48,251,30230
  
negative.code: 914,Pelham,36,119,12659
  914,Dobbs Ferry,36,119,11147
  914,Mount Kisco,36,119,10998
  914,Croton On Hudson,36,119,8258
  914,Briarcliff Manor,36,119,7332
  914,Pleasantville,36,119,7322
  914,Irvington,36,119,6606
  