condition	mean	min	max
4 h after light	6.3	6.3	6.3
8 h after light	18.85	8.7	29.0
12 h after light	5.35	3.0	7.7
4 h after dark	12.95	8.4	17.5
8 h after dark	6.4	5.6	7.2
12 h after dark	13.65	7.8	19.5