condition	mean	min	max
4 h after light	21.3	21.3	21.3
8 h after light	8.4	5.8	11.0
12 h after light	4.4	3.1	5.7
4 h after dark	6.6	3.5	9.7
8 h after dark	3.9	3.0	4.8
12 h after dark	5.800000000000001	3.7	7.9