condition mean min max 0 h after light 229.0625 220.816 237.309 4 h after light 2518.31 2192.02 2844.6 8 h after light 3375.14 3263.24 3487.04 4 h after dark 8.403555 6.92021 9.8869 8 h after dark 48.3864 46.5752 50.1976 12 h after dark 119.291 102.239 136.343