condition mean min max 4 h after light 11.1855795 10.471216 11.899943 8 h after light 10.537075999999999 9.887624 11.186528 12 h after light 10.375388999999998 10.012645 10.738133 4 h after dark 9.711261 9.711261 9.711261 8 h after dark 12.4284725 11.177392 13.679553 12 h after dark 11.291713 11.291713 11.291713