condition	mean	min	max
4 h after light	7.13403	6.97174	7.2542100000000005
8 h after light	7.012873333333334	6.823930000000001	7.216410000000001
12 h after light	7.060406666666666	6.8455699999999995	7.28004
4 h after dark	7.283219999999999	7.114489999999999	7.4408199999999995
8 h after dark	7.399746666666667	7.245310000000001	7.65687
12 h after dark	7.220993333333333	7.01412	7.389589999999999