condition	mean	min	max
4 h after light	7.28401	7.08375	7.57295
8 h after light	7.4668	7.23222	7.922560000000001
12 h after light	7.4556233333333335	7.19382	7.8647800000000005
4 h after dark	7.421993333333333	7.14317	7.8864399999999995
8 h after dark	7.400986666666666	7.12522	7.7975699999999994
12 h after dark	7.219086666666667	6.94729	7.6379