condition	mean	min	max
4 h after light	17.4	17.4	17.4
8 h after light	12.95	4.5	21.4
12 h after light	17.0	7.5	26.5
4 h after dark	8.25	5.4	11.1
8 h after dark	21.9	16.3	27.5
12 h after dark	18.35	8.3	28.4