condition mean min max 4 h after light 2675.1 2675.1 2675.1 8 h after light 2684.85 2429.5 2940.2 12 h after light 2665.85 2604.5 2727.2 4 h after dark 2326.5 2294.8 2358.2 8 h after dark 2200.55 2147.2 2253.9 12 h after dark 2036.25 1964.5 2108.0