condition	mean	min	max
4 h after light	6.6	6.6	6.6
8 h after light	10.85	7.8	13.9
12 h after light	15.5	1.8	29.2
4 h after dark	17.55	9.8	25.3
8 h after dark	5.0	2.3	7.7
12 h after dark	21.85	21.2	22.5