condition mean min max 4 h after light 1.3 1.3 1.3 8 h after light 1.65 1.2 2.1 12 h after light 2.7 2.7 2.7 4 h after dark 12.35 1.9 22.8 8 h after dark 2.8499999999999996 2.4 3.3 12 h after dark 13.149999999999999 1.4 24.9