condition mean min max 4 h after light 3375.1 3375.1 3375.1 8 h after light 3351.4 2870.4 3832.4 12 h after light 3674.55 3495.7 3853.4 4 h after dark 4124.15 3978.3 4270.0 8 h after dark 4561.65 4025.7 5097.6 12 h after dark 4164.75 3659.1 4670.4