anchor.diff:  DE_1DEDAG,Dagebüll,Germany,port
   DE_2DEECK,Eckernförde,Germany,port
   DE_1DEEME,Emden,Germany,port
  +DE_1DE76Y,Esens,Germany,port
   DE_2DEFLF,Flensburg,Germany,port
  +DE_2DE117,Flensburger Förde - other ports,Germany,port
  +DE_1DE017,Föhr,Germany,port
   DE_1DEHAM,Hamburg,Germany,port
   DE_2DEHHF,Heiligenhafen,Germany,port
   DE_1DEHGL,Helgoland,Germany,port
  
positive.code: PT_0PTFNC,Funchal (Madeira),Portugal,port
  PT_0PTPXO,"Porto Santo (Ilha de Porto Santo, Madeira)",Portugal,port
  PT_0PTSET,Setúbal,Portugal,port
  SI_0SIKOP,Koper,Slovenia,port
  FI_0FIECK,Eckerö,Finland,port
  FI_0FIHEL,Helsinki,Finland,port
  FI_0FIMHQ,Mariehamn,Finland,port
  
negative.code: SE_1SEVVK,Västervik,Sweden,port
  SE_1SEVBY,Visby,Sweden,port
  SE_1SEYST,Ystad,Sweden,port
  SE_9SE88C,Sweden (confidential data aggregated by Eurostat),Sweden,port
  UK_1GBABD,Aberdeen,United Kingdom of Great Britain,port
  UK_1GBBIF,Barrow-In-Furness,United Kingdom of Great Britain,port
  UK_1GBBEL,Belfast,United Kingdom of Great Britain,port
  