condition	mean	min	max
4 h after light	8.360223333333334	8.22795	8.501660000000001
8 h after light	8.188793333333333	8.17072	8.21786
12 h after light	8.125783333333333	8.028030000000001	8.22138
4 h after dark	8.208143333333334	8.12097	8.25571
8 h after dark	8.08935	7.990410000000001	8.2046
12 h after dark	8.163446666666667	7.89995	8.401530000000001