condition mean min max 4 h after light 2050.9 2050.9 2050.9 8 h after light 2473.25 2158.3 2788.2 12 h after light 3171.45 2643.4 3699.5 4 h after dark 3835.55 3587.9 4083.2 8 h after dark 3504.45 3188.2 3820.7 12 h after dark 2973.75 2656.4 3291.1