anchor.diff:  ,Skyline,trail,open,false,true,,Sluice,more_difficult,false,false,grooming
   ,Skyline,trail,open,false,true,,Sluice Chute,most_difficult,false,false,grooming
   ,Skyline,trail,closed,false,true,,Sluice Headwall,most_difficult,false,false,grooming
  -,Base Area,trail,closed,true,false,,Snowbrook,easier,false,false,closed
  +,Base Area,trail,closed,false,false,,Snowbrook,easier,false,false,closed
   ,Sugarloaf Outdoor Center,trail,closed,,false,,Snowbrook Trail,more_difficult,false,false,closed
   ,Sugarloaf Outdoor Center,trail,closed,,false,,South Horn,most_difficult,false,false,closed
   ,Skyline,trail,closed,false,false,,Spillway X-Cut,most_difficult,false,false,closed
  
positive.code: ,West Mountain,trail,closed,false,false,,Upper Glancer,easier,false,false,closed
  ,Skyline,trail,closed,false,false,,Upper Gondola Line,extremely_difficult,false,false,closed
  ,Brackett Basin,trail,closed,,,,Upper Kennebec Glade,most_difficult,false,false,closed
  ,Skyline,trail,closed,false,false,,Upper Narrow Gauge,most_difficult,false,false,closed
  ,Whiffletree,trail,closed,false,false,,Upper Pole Line,more_difficult,false,false,closed
  ,Whiffletree,trail,closed,false,false,,Upper Rookie River Glade,most_difficult,false,false,closed
  ,West Mountain,trail,closed,false,false,,Upper Scoot,more_difficult,false,false,closed
  
negative.code: ,Whiffletree,trail,closed,false,false,,Upper Springboard,more_difficult,false,false,closed
  ,Whiffletree,trail,closed,false,false,,Upper Stubs,easier,false,false,closed
  ,Timberline,trail,closed,false,false,,Upper Timberline,easier,false,false,closed
  ,West Mountain,trail,closed,false,false,,Upper West Mountain,easier,false,false,closed
  ,Whiffletree,trail,closed,false,false,,Upper Whiffletree,more_difficult,false,false,closed
  ,West Mountain,trail,closed,true,false,,Upper Windrow,more_difficult,false,false,closed
  ,Skyline,trail,closed,false,false,,Upper Winters Way,extremely_difficult,false,false,closed
  