condition mean min max 4 h after light 1.3 1.3 1.3 8 h after light 2.3499999999999996 1.9 2.8 12 h after light 14.049999999999999 3.4 24.7 4 h after dark 8.85 1.0 16.7 8 h after dark 24.9 18.9 30.9 12 h after dark 2.65 1.5 3.8