condition	mean	min	max
4 h after light	8.0	8.0	8.0
8 h after light	8.6	4.7	12.5
12 h after light	27.3	7.1	47.5
4 h after dark	14.85	8.7	21.0
8 h after dark	16.1	8.0	24.2
12 h after dark	6.25	4.6	7.9