anchor.diff:  0.0,0.0,PlPx-1,0,5
   0.0,0.0,KkHh-1,0,4
   0.0,0.0,OdPc-5,0,4
  -,,OhRh-1,Nelson River,4
  +0.0,0.0,OhRh-1,Nelson River,4
   74.7,-94.9,QeJu-3,Lake,4
   62.8,-115.9,KePl-1,Frank Channel,3
   66.6,-118.0,MdPs-25,0,3
  
positive.code: 0.0,0.0,ObRv-25,0,1
  0.0,0.0,OdTa-#,0,1
  0.0,0.0,OhPo-5,0,1
  ,,OlRr-1,0,1
  0.0,0.0,PaJs-13,0,1
  72.5,-111.2,PcNv-1,0,1
  72.7,-93.8,PeJr-4,Nuvuktutak ?,1
  
negative.code: 67.7,-115.4,MkPk-12,0,1
  67.7,-115.4,MkPk-4,0,1
  67.8,-115.3,MkPk-9,Willowherb,1
  0.0,0.0,MMPP-1,MmPp-1,1
  0.0,0.0,MyPy-1,0,1
  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
  0.0,0.0,NiTr-2,0,1
  0.0,0.0,NkRh-1,0,1
  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
  