condition	mean	min	max
4 h after light	1.84729	1.84011	1.85447
8 h after light	2.45611	2.35479	2.55743
12 h after light	3.81298	2.58943	5.03653
4 h after dark	9.262185	6.78527	11.7391
8 h after dark	3.991855	3.84777	4.13594
12 h after dark	2.748425	2.49174	3.00511