condition	mean	min	max
4 h after light	60.1	60.1	60.1
8 h after light	33.95	27.0	40.9
12 h after light	54.95	40.6	69.3
4 h after dark	58.5	53.1	63.9
8 h after dark	64.8	56.4	73.2
12 h after dark	13.1	6.8	19.4