anchor.diff:  423,Bristol,47,163,26842
   423,Greeneville,47,59,14888
   423,Elizabethton,47,19,13743
  -423,Soddy-Daisy,47,65,13693
  +423,Soddy Daisy,47,65,13693
   423,Athens,47,107,13615
   423,Collegedale,47,65,11659
   423,Dayton,47,143,7354
  
positive.code: 831,Boulder Creek,6,87,0
  831,Bradley,6,53,0
  831,Brookdale,6,87,0
  831,Carmel Valley Village,6,53,0
  831,Castroville,6,53,0
  831,Chualar,6,53,0
  831,Davenport,6,87,0
  
negative.code: 928,Lukachukai,4,1,0
  928,Many Farms,4,1,0
  928,Marble Canyon,4,5,0
  928,Mcnary,4,1,0
  928,Meadview,4,15,0
  928,Mohave Valley,4,15,0
  928,Morenci,4,11,0
  