condition	mean	min	max
4 h after light	19.2	19.2	19.2
8 h after light	2.4	2.0	2.8
12 h after light	2.75	2.2	3.3
4 h after dark	2.8499999999999996	2.3	3.4
8 h after dark	3.8	2.3	5.3
12 h after dark	3.8000000000000003	3.2	4.4