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: AB15,390000,805300,57.13868,-2.16525,Aberdeen,Aberdeen City,Scotland,SCT,Scotland
  AB16,390600,807800,57.16115,-2.15543,Aberdeen,Aberdeen City,Scotland,SCT,Scotland
  AB21,387900,813200,57.2096,-2.20033,Aberdeen Airport,Aberdeen City,Scotland,SCT,Scotland
  AB22,392800,810700,57.18724,-2.11913,Bridge Of Don,Aberdeen City,Scotland,SCT,Scotland
  AB23,394700,813500,57.21242,-2.08776,Aberdeen,Aberdeen City,Scotland,SCT,Scotland
  AB24,393308,808004,57.16284,-2.11228,Aberdeen,Aberdeen City,Scotland,SCT,Scotland
  AB25,393200,806900,57.15311,-2.11241,Aberdeen,Aberdeen City,Scotland,SCT,Scotland
  
negative.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
  