condition	mean	min	max
4 h after light	8.028310000000001	7.98388	8.07155
8 h after light	8.03739	7.836880000000001	8.21251
12 h after light	8.1674	8.02467	8.3984
4 h after dark	8.384736666666667	8.09555	8.631780000000001
8 h after dark	8.277913333333332	8.14638	8.40214
12 h after dark	7.974833333333333	7.72078	8.159989999999999