condition	mean	min	max
4 h after light	17064.5	17064.5	17064.5
8 h after light	16898.1	15384.7	18411.5
12 h after light	13875.7	12465.4	15286.0
4 h after dark	8732.55	5756.9	11708.2
8 h after dark	7384.4	6289.2	8479.6
12 h after dark	9779.95	8647.7	10912.2