condition	mean	min	max
4 h after light	7.3	7.3	7.3
8 h after light	1.5	1.5	1.5
12 h after light	19.65	15.1	24.2
4 h after dark	45.6	13.3	77.9
8 h after dark	25.5	1.9	49.1
12 h after dark	16.3	11.3	21.3