anchor.diff:  PH4,289600,709000,56.26072,-3.78244,Blackford,Perth and Kinross,Scotland,SCT,Scotland
   PH40,169900,792200,56.96381,-5.7856,,Highland,Scotland,SCT,Scotland
   PH41,167300,796800,57.00374,-5.83251,Mallaig,Highland,Scotland,SCT,Scotland
  -PH42,147900,786600,56.90217,-6.14094,Isle Of Eigg,Highland,Scotland,SCT,Scotland
  -PH43,140200,799700,57.01529,-6.28049,Isle Of Rum,Highland,Scotland,SCT,Scotland
  -PH44,127000,805200,57.05693,-6.50319,Isle Of Canna,Highland,Scotland,SCT,Scotland
  +PH42,147900,786600,56.90217,-6.14094,Isle of Eigg,Highland,Scotland,SCT,Scotland
  +PH43,140200,799700,57.01529,-6.28049,Isle of Rum,Highland,Scotland,SCT,Scotland
  +PH44,127000,805200,57.05693,-6.50319,Isle of Canna,Highland,Scotland,SCT,Scotland
   PH49,209500,758000,56.675,-5.10977,Glencoe,Highland,Scotland,SCT,Scotland
   PH5,287000,716700,56.32927,-3.8277,Muthill,Perth and Kinross,Scotland,SCT,Scotland
   PH50,218600,762000,56.71451,-4.96427,Kinlochleven,Highland,Scotland,SCT,Scotland
  
positive.code: PH21,277500,801500,57.08834,-4.02169,,Highland,Scotland,SCT,Scotland
  PH22,290900,813400,57.19857,-3.80587,Aviemore,Highland,Scotland,SCT,Scotland
  PH23,291500,823300,57.28761,-3.80028,,Highland,Scotland,SCT,Scotland
  PH24,294500,819500,57.25419,-3.74891,Boat Of Garten,Highland,Scotland,SCT,Scotland
  PH25,300700,820200,57.26187,-3.64646,Nethy Bridge,Highland,Scotland,SCT,Scotland
  PH26,303400,827700,57.3298,-3.60464,Grantown-on-Spey,Highland,Scotland,SCT,Scotland
  PH3,294600,713500,56.30228,-3.70355,Auchterarder,Perth and Kinross,Scotland,SCT,Scotland
  
negative.code: TR19,140600,28600,50.10012,-5.62783,Sancreed,Cornwall,South West England,ENG,England
  TR2,189600,43500,50.25334,-4.95186,Tregoney,Cornwall,South West England,ENG,England
  TR20,150700,31600,50.13138,-5.48882,Ludgvan,Cornwall,South West England,ENG,England
  TR21,94600,12000,49.92936,-6.25622,Isles of Scilly,Isles of Scilly,South West England,ENG,England
  TR22,88100,8200,49.89192,-6.34346,Isles of Scilly,Isles of Scilly,South West England,ENG,England
  TR23,87900,15000,49.95281,-6.35174,Isles of Scilly,Isles of Scilly,South West England,ENG,England
  TR24,89200,15200,49.95528,-6.33383,Isles of Scilly,Isles of Scilly,South West England,ENG,England
  TR25,92200,16000,49.96401,-6.29276,Isles of Scilly,Isles of Scilly,South West England,ENG,England
  TR26,151800,39500,50.20276,-5.4786,St Ives,Cornwall,South West England,ENG,England
  TR27,157100,36900,50.18162,-5.4028,Hayle,Cornwall,South West England,ENG,England
  TR3,178200,39900,50.21684,-5.10944,Perranarworthal,Cornwall,South West England,ENG,England
  