anchor.diff:  67.7,-115.4,MkPk-12,0,1
   67.7,-115.4,MkPk-4,0,1
   67.8,-115.3,MkPk-9,Willowherb,1
  -,,MMPP-1,MmPp-1,1
  +0.0,0.0,MMPP-1,MmPp-1,1
   0.0,0.0,MyPy-1,0,1
  -,,NfTn-2,0,1
  +0.0,0.0,NfTn-2,0,1
   0.0,0.0,NhJp-4,0,1
   0.0,0.0,NhPf-0?,0,1
   0.0,0.0,NhTr-1,0,1
   0.0,0.0,NiHf-1,0,1
   0.0,0.0,NiJq-15,0,1
  -,,NiTr-2,0,1
  +0.0,0.0,NiTr-2,0,1
   0.0,0.0,NkRh-1,0,1
  -,,NkRh-8,0,1
  +0.0,0.0,NkRh-8,0,1
   0.0,0.0,NkRj-3,0,1
   0.0,0.0,NkRo-2,0,1
   0.0,0.0,NkTc-5,0,1
  
positive.code: 0.0,0.0,NlTk-2,0,3
  70.6,-112.6,OdPb-1,Kuuk-IV,3
  0.0,0.0,OdPp-2,0,3
  ,,OdPq-1,Memorana,3
  72.5,-93.4,PcJq-5,Cape Garry,3
  73.0,-80.6,PgHb-1,Nunguvik,3
  74.7,-94.9,QeJu-1,High;M1,3
  74.7,-94.9,QeJu-2,Lower;M2,3
  76.1,-94.9,RaJu-1,Snowdrift,3
  76.3,-93.7,RbJr-1,Porden Point Brook Village,3
  ,,KbNa-16,0,2
  65.8,-114.3,LkPg-9,0,2
  66.6,-122.6,MdRh-3,0,2
  ,,MePr-8,Great Bear Lake XII,2
  66.9,-121.3,MfRd-4,0,2
  ,,MiRi-2,Herton Lake/ Great Bear Lake II,2
  0.0,0.0,MkPk-2,0,2
  0.0,0.0,MlPi-1,0,2
  68.2,-131.0,NbTj-1,0,2
  
negative.code: 67.3,-137.8,MhVf-1,Bell Mouth,1
  0.0,0.0,MiPq-1a,0,1
  0.0,0.0,MiRh-12,0,1
  0.0,0.0,MiRi-1,Herton Lake/ Great Bear Lake I,1
  0.0,0.0,MiRi-3,Herton Lake/ Great Bear Lake III,1
  0.0,0.0,MjVg-8,0,1
  67.6,-139.6,MjVk-7,Old Chief Creek,1
  0.0,0.0,MjVl-6 (?),0,1
  