condition	mean	min	max
4 h after light	7.668886666666666	7.628439999999999	7.69583
8 h after light	7.79387	7.72421	7.83581
12 h after light	7.701123333333333	7.650060000000001	7.73038
4 h after dark	7.6011	7.444310000000001	7.8071
8 h after dark	7.692006666666667	7.67278	7.71093
12 h after dark	7.62249	7.43986	7.774839999999999