condition	mean	min	max
4 h after light	3.556045	3.41676	3.69533
8 h after light	3.59061	3.32834	3.85288
12 h after light	3.926585	3.70115	4.15202
4 h after dark	7.508666666666667	6.85162	8.77518
8 h after dark	5.29835	4.44497	6.80786
12 h after dark	4.461453333333333	3.51137	5.12187