condition mean min max 4 h after light 129.329 126.884 131.774 8 h after light 113.1895 112.425 113.954 12 h after light 128.514 127.0 130.028 4 h after dark 158.0215 157.186 158.857 8 h after dark 159.0815 158.178 159.985 12 h after dark 161.3605 161.263 161.458