condition	mean	min	max
4 h after light	4.3	4.3	4.3
8 h after light	2.4	1.9	2.9
12 h after light	3.9	3.2	4.6
4 h after dark	1.85	1.5	2.2
8 h after dark	3.8	3.7	3.9
12 h after dark	2.7	2.0	3.4