condition	mean	min	max
4 h after light	7.53648	7.4593300000000005	7.687880000000001
8 h after light	7.540073333333334	7.507210000000001	7.6052100000000005
12 h after light	7.484146666666667	7.39317	7.540589999999999
4 h after dark	7.376133333333334	7.1997100000000005	7.47715
8 h after dark	7.20432	6.90983	7.35375
12 h after dark	7.214256666666667	6.97495	7.423360000000001