condition	mean	min	max
4 h after light	3.9	3.9	3.9
8 h after light	9.5	1.4	17.6
12 h after light	7.25	3.1	11.4
4 h after dark	22.6	19.4	25.8
8 h after dark	15.85	8.0	23.7
12 h after dark	14.1	13.5	14.7