condition	mean	min	max
4 h after light	11.2	11.2	11.2
8 h after light	20.0	6.3	33.7
12 h after light	26.4	23.8	29.0
4 h after dark	13.95	9.0	18.9
8 h after dark	11.25	6.1	16.4
12 h after dark	7.25	7.0	7.5