condition mean min max 0 h after light 13.636 13.1335 14.1385 2 h after light 2.457505 0.0 4.91501 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 2.198445 0.0 4.39689 2 h after dark 0.0 0.0 0.0 4 h after dark 2.183405 0.0 4.36681 8 h after dark 2.462025 0.0 4.92405 12 h after dark 9.25678 4.49426 14.0193