condition	mean	min	max
4 h after light	7.7	7.7	7.7
8 h after light	5.1	4.8	5.4
12 h after light	16.8	3.0	30.6
4 h after dark	6.0	5.2	6.8
8 h after dark	17.2	6.1	28.3
12 h after dark	8.35	6.8	9.9