condition	mean	min	max
4 h after light	7.7	7.7	7.7
8 h after light	16.75	8.5	25.0
12 h after light	27.1	8.0	46.2
4 h after dark	42.5	10.3	74.7
8 h after dark	35.1	15.4	54.8
12 h after dark	23.45	5.0	41.9