condition	mean	min	max
4 h after light	1.6	1.6	1.6
8 h after light	3.5	1.5	5.5
12 h after light	5.3	1.9	8.7
4 h after dark	5.85	3.3	8.4
8 h after dark	14.7	11.6	17.8
12 h after dark	24.0	3.5	44.5