condition	mean	min	max
4 h after light	7.255626666666667	7.1249	7.439769999999999
8 h after light	7.57722	7.3387899999999995	7.743939999999999
12 h after light	7.78459	7.50645	7.926939999999999
4 h after dark	7.50201	7.2390300000000005	7.6475800000000005
8 h after dark	7.332803333333334	7.100630000000001	7.45908
12 h after dark	7.285636666666666	7.22739	7.32337