anchor.diff:  213,Carson,6,37,92735
   213,Gardena,6,37,60224
   214,Irving,48,113,240373
  -214,Mckinney,48,85,181330
  +214,McKinney,48,85,181330
   214,Lewisville,48,121,104765
   214,Allen,48,85,100685
   214,Richardson,48,113,83701
  
positive.code: 530,Arbuckle,6,11,0
  530,Artois,6,21,0
  530,Bangor,6,7,0
  530,Beale Afb,6,115,0
  530,Beckwourth,6,63,0
  530,Belden,6,63,0
  530,Berry Creek,6,7,0
  530,Bieber,6,35,0
  530,Big Bar,6,105,0
  530,Big Bend,6,89,0
  530,Blairsden Graeagle,6,63,0
  530,Brooks,6,113,0
  530,Brownsville,6,115,0
  530,Burney,6,89,0
  
negative.code: 806,Maple,48,17,0
  806,Masterson,48,341,0
  806,Matador,48,345,0
  806,McLean,48,179,0
  806,Mcadoo,48,107,0
  806,Meadow,48,445,0
  806,Morse,48,233,0
  806,New Deal,48,303,0
  