condition	mean	min	max
4 h after light	17505.2	17505.2	17505.2
8 h after light	17946.6	16885.6	19007.6
12 h after light	15232.3	13857.3	16607.3
4 h after dark	8477.45	6208.5	10746.4
8 h after dark	7076.5	5528.7	8624.3
12 h after dark	10499.95	8757.4	12242.5