condition mean min max 4 h after light 1996.6901905 1821.539749 2171.840632 8 h after light 2300.069866 2013.159241 2586.980491 12 h after light 2939.0723135 2883.656782 2994.487845 4 h after dark 2262.1452245 1527.481469 2996.80898 8 h after dark 2455.5161035 2172.436616 2738.595591 12 h after dark 1595.68874 1595.68874 1595.68874