condition	mean	min	max
4 h after light	8.61065	8.560089999999999	8.65404
8 h after light	8.67624	8.59123	8.830210000000001
12 h after light	8.45411	8.3375	8.584389999999999
4 h after dark	8.44519	8.30301	8.66137
8 h after dark	8.175313333333333	8.02093	8.37235
12 h after dark	7.873256666666666	7.51757	8.16671