condition	mean	min	max
4 h after light	11.7	11.7	11.7
8 h after light	15.6	2.5	28.7
12 h after light	19.3	16.5	22.1
4 h after dark	16.6	8.0	25.2
8 h after dark	24.45	16.9	32.0
12 h after dark	9.15	5.7	12.6