anchor.diff:  ,Brackett Basin,trail,open,,,,Edger Glade One,extremely_difficult,false,false,open
   ,Brackett Basin,trail,open,,,,Edger Glade Two,extremely_difficult,false,false,open
   ,Snowfields™ Summit,trail,closed,false,false,,Extreme Chute,extremely_difficult,false,false,closed
  -,Sugarloaf Outdoor Center,trail,open,,false,,Fifty,most_difficult,false,false,open
  +,Sugarloaf Outdoor Center,trail,open,,true,,Fifty,most_difficult,false,false,grooming
   ,King Pine,trail,open,false,true,,Flume,most_difficult,false,false,grooming
   ,King Pine,trail,open,false,false,,Freds Pitch Glade,most_difficult,false,false,open
   ,SuperQuad,trail,open,false,true,,Gin Pole,more_difficult,false,false,grooming
  
positive.code: ,Sugarloaf Outdoor Center,trail,open,,true,,Moose Pond Loop,easier,false,false,grooming
  ,Timberline,trail,open,false,true,,Narrow Gauge Ext,most_difficult,false,false,grooming
  ,Sugarloaf Outdoor Center,trail,open,,true,,Narrow Gauge Pathway,easier,false,false,grooming
  ,Sugarloaf Outdoor Center,trail,open,,false,,Narrow Gauge Spur,easier,false,false,open
  ,Sugarloaf Outdoor Center,trail,open,,false,,North Horn,most_difficult,false,false,open
  ,Sugarloaf Outdoor Center,trail,open,,true,,Oh My Gosh Loop,easier,false,false,grooming
  ,Sugarloaf Outdoor Center,trail,open,,false,,Old Race Trail,more_difficult,false,false,open
  ,King Pine,trail,open,false,false,,Old Winter's Way,more_difficult,false,false,open
  ,SuperQuad,trail,open,false,true,,Peavy X-Cut,easier,false,false,grooming
  ,Double Runner,trail,open,,false,,Picaroon,easier,false,false,open
  
negative.code: ,Whiffletree,trail,open,false,false,,Upper Springboard,more_difficult,false,false,open
  ,Whiffletree,trail,open,false,true,,Upper Stubs,easier,false,false,grooming
  ,Timberline,trail,open,false,true,,Upper Timberline,easier,false,false,grooming
  ,West Mountain,trail,open,false,true,,Upper West Mountain,more_difficult,false,false,grooming
  ,Whiffletree,trail,open,false,true,,Upper Whiffletree,more_difficult,false,false,grooming
  ,West Mountain,trail,open,false,true,,Upper Windrow,more_difficult,false,false,grooming
  ,Skyline,trail,open,false,false,,Upper Winters Way,extremely_difficult,false,false,open
  