anchor.diff:  "NUTS_HU31","Észak-Magyarország","Hungary","NUTS2"
   "NUTS_HU32","Észak-Alföld","Hungary","NUTS2"
   "NUTS_HU33","Dél-Alföld","Hungary","NUTS2"
  -"NUTS_MT00","Malta","Malta","NUTS2"
   "NUTS_NL11","Groningen","Netherlands","NUTS2"
   "NUTS_NL12","Friesland (NL)","Netherlands","NUTS2"
   "NUTS_NL13","Drenthe","Netherlands","NUTS2"
  
positive.code: "NUTS_UKM7","Eastern Scotland","United Kingdom of Great Britain","NUTS2"
  "NUTS_UKM8","West Central Scotland","United Kingdom of Great Britain","NUTS2"
  "NUTS_UKM9","Southern Scotland","United Kingdom of Great Britain","NUTS2"
  "NUTS_UKN0","Northern Ireland (UK)","United Kingdom of Great Britain","NUTS2"
  "NUTS_IS00","Ísland","Iceland","NUTS2"
  "NUTS_NO01","Oslo og Akershus","Norway","NUTS2"
  "NUTS_NO02","Hedmark og Oppland","Norway","NUTS2"
  "NUTS_NO03","Sør-Østlandet","Norway","NUTS2"
  
negative.code: "NUTS_PT16","Centro (PT)","Portugal","NUTS2"
  "NUTS_PT17","Área Metropolitana de Lisboa","Portugal","NUTS2"
  "NUTS_PT18","Alentejo","Portugal","NUTS2"
  "NUTS_RO11","Nord-Vest","Romania","NUTS2"
  "NUTS_RO12","Centru","Romania","NUTS2"
  "NUTS_RO22","Sud-Est","Romania","NUTS2"
  "NUTS_RO31","Sud - Muntenia","Romania","NUTS2"
  "NUTS_RO32","Bucuresti - Ilfov","Romania","NUTS2"
  