condition	mean	min	max
4 h after light	7.567286666666666	7.40672	7.685219999999999
8 h after light	8.3051	8.1996	8.50121
12 h after light	7.788626666666667	7.4214199999999995	8.10125
4 h after dark	8.18507	8.1368	8.23741
8 h after dark	8.232293333333335	7.989260000000001	8.48395
12 h after dark	8.05744	7.84611	8.21433