condition	mean	min	max
4 h after light	6422.7	6422.7	6422.7
8 h after light	6967.1	6417.6	7516.6
12 h after light	7054.85	7035.7	7074.0
4 h after dark	4168.55	1336.8	7000.3
8 h after dark	2305.95	2274.5	2337.4
12 h after dark	3295.25	2377.5	4213.0