condition mean min max 4 h after light 2799.0 2799.0 2799.0 8 h after light 3078.1 3030.0 3126.2 12 h after light 4894.5 3646.6 6142.4 4 h after dark 4819.85 3236.6 6403.1 8 h after dark 4570.75 4246.0 4895.5 12 h after dark 4504.45 4139.9 4869.0