condition	mean	min	max
4 h after light	23.0	23.0	23.0
8 h after light	46.2	42.7	49.7
12 h after light	6.6	6.1	7.1
4 h after dark	9.5	8.4	10.6
8 h after dark	9.75	7.8	11.7
12 h after dark	4.5	2.1	6.9