condition	mean	min	max
4 h after light	3.5	3.5	3.5
8 h after light	52.85	46.6	59.1
12 h after light	10.75	5.8	15.7
4 h after dark	17.8	8.9	26.7
8 h after dark	31.25	30.1	32.4
12 h after dark	16.3	4.6	28.0