condition	mean	min	max
4 h after light	9.1	9.1	9.1
8 h after light	30.25	29.2	31.3
12 h after light	21.35	13.2	29.5
4 h after dark	37.2	31.9	42.5
8 h after dark	19.45	14.5	24.4
12 h after dark	15.2	4.6	25.8