condition	mean	min	max
4 h after light	11.7	11.7	11.7
8 h after light	14.4	7.8	21.0
12 h after light	2.1500000000000004	2.1	2.2
4 h after dark	2.3	1.5	3.1
8 h after dark	6.5	6.5	6.5
12 h after dark	17.4	17.3	17.5