condition	mean	min	max
4 h after light	7.4459333333333335	7.396089999999999	7.53326
8 h after light	8.894589999999999	8.642719999999999	9.17405
12 h after light	8.132003333333333	7.80395	8.38142
4 h after dark	7.55925	7.46891	7.63587
8 h after dark	7.315073333333333	7.1935899999999995	7.40533
12 h after dark	6.97084	6.9133	7.05737