condition	mean	min	max
4 h after light	2.8	2.8	2.8
8 h after light	6.7	5.7	7.7
12 h after light	9.85	7.8	11.9
4 h after dark	14.9	6.8	23.0
8 h after dark	6.6	6.6	6.6
12 h after dark	5.3	5.1	5.5