condition	mean	min	max
4 h after light	7.60355	7.57532	7.65917
8 h after light	7.62507	7.532780000000001	7.69539
12 h after light	7.312143333333333	7.03901	7.45637
4 h after dark	7.61949	7.57389	7.673839999999999
8 h after dark	7.587516666666667	7.5182899999999995	7.6521300000000005
12 h after dark	7.577646666666667	7.51618	7.658530000000001