condition	mean	min	max
4 h after light	6.794636666666666	6.6261399999999995	7.027769999999999
8 h after light	6.766383333333333	6.593539999999999	6.951169999999999
12 h after light	6.464746666666667	6.23346	6.6075800000000005
4 h after dark	6.63987	6.52124	6.72277
8 h after dark	6.554390000000001	6.07616	6.800110000000001
12 h after dark	6.60307	6.42645	6.95262