condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.2126245 0.201297 0.223952 4 h after dark 0.23329375000000002 0.0738555 0.392732 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0