anchor.diff:  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
  -,,MiRi-1,Herton Lake/ Great Bear Lake I,1
  -,,MiRi-3,Herton Lake/ Great Bear Lake III,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
  
positive.code: 0.0,0.0,XBM-9,0,2
  0.0,0.0,HAR-1,0,1
  0.0,0.0,JiNd-1,0,1
  ,,KbNb-4,KbNb-4,1
  62.4,-106.0,KcNg-3,0,1
  63.7,-104.5,KjNb-7,Duc,1
  63.7,-100.4,KkLn-1,Grant Lake,1
  
negative.code: 0.0,0.0,PlPx-1,0,5
  0.0,0.0,KkHh-1,0,4
  0.0,0.0,OdPc-5,0,4
  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
  