condition	mean	min	max
4 h after light	7.612606666666666	7.310219999999999	7.97174
8 h after light	7.057553333333334	6.90153	7.1734
12 h after light	7.14579	6.96422	7.25196
4 h after dark	7.464143333333333	7.331519999999999	7.571560000000001
8 h after dark	7.667956666666666	7.432589999999999	7.866639999999999
12 h after dark	7.625290000000001	7.435910000000001	7.88015