condition mean min max 4 h after light 2.8 2.8 2.8 8 h after light 3.25 1.4 5.1 12 h after light 3.15 3.0 3.3 4 h after dark 25.900000000000002 4.7 47.1 8 h after dark 3.6500000000000004 3.1 4.2 12 h after dark 2.3 1.4 3.2