condition	mean	min	max
4 h after light	6.7	6.7	6.7
8 h after light	17.25	10.7	23.8
12 h after light	3.6	1.7	5.5
4 h after dark	16.1	5.9	26.3
8 h after dark	10.3	7.7	12.9
12 h after dark	4.6	4.1	5.1