anchor.diff:  MGFL,,78615,Flores/Santa El,,GT,16.9166666667,-89.8833333333,115,6,mgfl
   UNNN,,29634,Novosibirsk/Tolm,,RU,55.0833333333,82.9833333333,177,7,296340
   ,,,000761,,,40.94,-123.63,183,7,000761
  -KTBW,TBW,72210,Tampa Bay Area,FL,US,27.7,-82.4,12,8,tbw
  +KTBW,TBW,72210,Tampa Bay Area/WFO,FL,US,27.7,-82.4,12,8,tbw
   KPYM,PYM,,Plymouth,MA,US,41.91,-70.73,43,7,kpym
   ,LMN,74647,Lamont Profiler,OK,US,36.69,-97.48,306,8,p#o
   ,,,999100,,,-28.23,134.98,226,7,999100
  -KSJN,SJN,,St Johns Industrial Air Park,AZ,US,34.52,-109.38,1745,6,sjn
  +KSJN,SJN,,St. Johns,AZ,US,34.52,-109.38,1745,6,sjn
   ,,,fps7,,,33.49,-77.59,0,7,fps7
   CYGQ,YGQ,71834,Geraldton,ON,CA,49.79,-86.93,351,6,cygq
  -,MBW,74431,Medicine Bow Pro,WY,US,41.9,-106.19,1997,8,p#5
  +,MBW,74431,Medicine Bow Profiler,WY,US,41.9,-106.19,1997,8,p#5
   KSCH,SCH,,Schenectady,NY,US,42.86,-73.93,115,7,ksch
   KSRQ,SRQ,,Sarasota/Bradenton Intl,FL,US,27.4,-82.55,18,6,ksrq
  -KPSC,PSC,,Pasco/Tri-Cities,WA,US,46.27,-119.12,121,6,psc
  +KRLD,RLD,,Richland,WA,US,46.32,-119.27,113,7,psc
   ,SLA,74449,Slater Profiler,IA,US,41.9,-93.7,315,8,p#a
   ,,,b#m,,,23.4,-162.3,0,7,b#m
   KTPA,TPA,72211,Tampa Intl Airport,FL,US,27.97,-82.53,11,3,ktpa
  
positive.code: ,,,kan,,,66.08,-152.17,222,7,kan
  ,,,wrp,,,69.9,-128.97,15,7,wrp
  KSTL,STL,72434,St. Louis Lambert,MO,US,38.76,-90.37,171,0,kstl
  KMGW,MGW,,Morgantown/Walter L. Hart Field,WV,US,39.64,-79.92,378,3,kmgw
  KMOP,MOP,,Mount Pleasant Muni,MI,US,43.62,-84.74,230,7,kmop
  ,,,000736,,,34.89,-79.76,109,7,000736
  KREJ,REJ,72661,Redig,SD,US,45.27,-103.54,922,8,bh1
  PHNY,LNY,,Lanai City Airport,HI,US,20.78,-156.95,399,6,phny
  KRSL,RSL,,Russell Muni,KS,US,38.87,-98.81,567,6,rsl
  CYVP,YVP,71906,Kuujjuaq,QB,CA,58.11,-68.42,60,5,cyvp
  MMLP,LAP,,La Paz Intl,,MX,24.07,-110.37,21,1,lap
  SARE,,87155,Resistencia Airp,,AR,-27.4333333333,-59.0333333333,52,6,871550
  KWAL,WAL,72402,Wallops Is Stn,VA,US,37.94,-75.47,14,5,wal
  ,,,000953,,,41.9,-125.8,0,7,000953
  KFOE,FOE,,Topeka/Forbes,KS,US,38.96,-95.67,320,6,kfoe
  ,,,999250,,,-27.2,-109.4,51,7,999250
  KHMM,HMM,,Hamilton/Ravalli Co,MT,US,46.25,-114.15,1265,9,c17
  KLIT,LIT,,Little Rock/Adams Field,AR,US,34.73,-92.23,79,0,klit
  KLMT,LMT,,Klamath Falls,OR,US,42.16,-121.73,1246,6,klmt
  KLEB,LEB,72611,Lebanon Muni,NH,US,43.63,-72.3,171,6,kleb
  ,,,000231,,,46.77,-91.25,301,7,000231
  
negative.code: ,,,awr,,,67.75,-144.11,686,7,awr
  ,,,atl2,,,36.05,-74.25,0,7,atl2
  ,,,000238,,,34.37,-117.36,873,7,000238
  KDCA,DCA,72405,Washington/National,VA,US,38.86,-77.03,18,1,kdca
  KSAV,SAV,72207,Savannah Muni,GA,US,32.14,-81.2,14,4,ksav
  MHTG,,78720,Tegucigalpa/Ton,,HN,14.0666666667,-87.2166666667,1004,6,mhtg
  ,,,g003,,,44.5,-122.7,244,7,g003
  KBPT,BPT,72241,Beaumont/Port Arthur,TX,US,29.95,-94.02,5,6,kbpt
  ,,,gtp,,,43.9,-110.0,2704,7,gtp
  KRME,RME,,Rome,NY,US,43.234,-75.407,154,7,rme
  KESC,ESC,72648,Escanaba,MI,US,45.73,-87.08,187,7,kesc
  PAFA,FAI,70261,Fairbanks Intl,AK,US,64.82,-147.87,132,5,pafa
  ,PLT,74533,Platteville Profiler,CO,US,40.18,-104.72,1524,8,p#d
  ,,,le2,,,42.47,-81.22,174,7,le2
  ,,,g#9,,,24.5,-94.4,0,7,g#9
  KIPT,IPT,72514,Williamsport,PA,US,41.26,-76.92,164,6,kipt
  TKPN,,78859,Charlestown/Newc,,AG,17.1833333333,-62.5666666667,17,7,tkpn
  KABR,ABR,72659,Aberdeen Rgnl,SD,US,45.46,-98.43,397,3,kabr
  KLOL,LOL,72580,Lovelock,NV,US,40.08,-118.55,1189,6,klol
  WMKP,,48601,Penang/Bayan Lep,,MY,5.28333333333,100.266666667,4,6,486010
  OSDI,,40080,Damascus (Civ/Mi,,SY,33.4166666667,36.5166666667,605,6,840080
  KPDT,PDT,72688,Pendleton Muni,OR,US,45.69,-118.85,462,2,kpdt
  KFTW,FTW,,Ft Worth/Meacham,TX,US,32.83,-97.35,214,2,kftw
  KS06,S06,,Mullan,ID,US,47.48,-115.8,1011,8,s06
  EPGD,,12150,Gdansk/Rebiechow,,PL,54.3666666667,18.4666666667,138,6,121500
  KCEF,CEF,74491,Chicopee,MA,US,42.21,-72.53,75,7,kcef
  ,,,b#p,,,17.4,-152.5,0,7,b#p
  KSMF,SMF,,Sacramento Intl,CA,US,38.7,-121.6,6,6,ksmf
  MMCV,CVM,76491,Cuidad Victoria,,MX,23.72,-98.97,238,6,mmcv
  KDET,DET,,Detroit City,MI,US,42.43,-83.02,190,3,kdet
  KLEW,LEW,,Auburn-Lewiston,ME,US,44.05,-70.28,207,88,726184
  ,,,000949,,,48.1,-126.6,0,7,000949
  ,,,efl,,,60.0,-120.0,437,7,efl
  MMMM,MLM,76665,Morelia,,MX,19.85,-101.03,1833,6,mmmm
  