condition	mean	min	max
4 h after light	15.24045	13.4989	16.982
8 h after light	15.1527	14.7028	15.6026
12 h after light	18.7215	17.6845	19.7585
4 h after dark	20.03515	19.689	20.3813
8 h after dark	16.2256	16.0196	16.4316
12 h after dark	17.7266	17.3226	18.1306