anchor.diff:  KMMH,Mammoth Lakes,California
   KMOB,Mobile,Alabama
   KMOD,Modesto,California
  -KMOT,Minot,North dakota
  +KMOT,Minot,North Dakota
   KMRY,Monterey,California
   KMSN,Madison,Wisconsin
   KMSO,Missoula,Montana
  
positive.code: KMTJ,Montrose,Colorado
  KMVY,Vineyard Haven,Massachusetts
  KMWA,Marion,Illinois
  KMYR,Myrtle Beach,South carolina
  KNYL,Yuma,Arizona
  KOAJ,Jacksonville,North carolina
  KOAK,Oakland,California
  KOKC,Oklahoma City,Oklahoma
  KOMA,Omaha,Nebraska
  
negative.code: KACY,Atlantic City,New jersey
  KAEX,Alexandria,Louisiana
  KAGS,Augusta,Georgia
  KALB,Albany,New York
  KALO,Waterloo,Iowa
  KALW,Walla Walla,Washington
  KAMA,Amarillo,Texas
  KAPN,Alpena,Michigan
  KART,Watertown,New York
  KASE,Aspen,Colorado
  KATL,Atlanta,Georgia
  KATW,Appleton,Wisconsin
  KAUS,Austin,Texas
  KAVL,Asheville,North Carolina
  KAVP,Wilkes-Barre/Scranton,Pennsylvania
  KAZO,Kalamazoo/Battle Creek,Michigan
  KBDL,Hartford,Connecticut
  KBFF,Scottsbluff,Nebraska
  KBFI,Seattle,Washington
  KBFL,Bakersfield,California
  KBGM,Binghamton,New York
  KBGR,Bangor,Maine
  KBHB,Bar Harbor,Maine
  KBHM,Birmingham,Alabama
  KBIL,Billings,Montana
  KBIS,Bismarck,North Dakota
  KBJI,Bemidji,Minnesota
  KBLI,Bellingham,Washington
  KBLV,Belleville,Illinois
  