condition	mean	min	max
4 h after light	3.4	3.4	3.4
8 h after light	6.25	5.3	7.2
12 h after light	6.199999999999999	5.8	6.6
4 h after dark	6.9	4.9	8.9
8 h after dark	6.55	4.6	8.5
12 h after dark	6.0	3.3	8.7