Heat map (vertical): DDDDDDDDDDDEEEEEEEEEEFFFGGGGGGGFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFGGGGGGGFGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGFFFFFFFFFFFGGFFFFFFFFFFFFFFFFFFFFFFFFGGFFFFFFFFFFGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGHHHHHHHHHHGGHHHHHHHHHHHHHHHGGGGGHGGHHHHHGHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIHHIIHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG