condition	mean	min	max
4 h after light	16.3	16.3	16.3
8 h after light	30.4	27.8	33.0
12 h after light	15.95	7.4	24.5
4 h after dark	4.85	4.2	5.5
8 h after dark	16.55	4.3	28.8
12 h after dark	20.7	19.4	22.0