condition	mean	min	max
4 h after light	6.7855799999999995	6.70127	6.87213
8 h after light	6.63729	6.38909	7.03561
12 h after light	6.768583333333334	6.5906899999999995	7.0171
4 h after dark	6.75364	6.52727	7.01889
8 h after dark	6.57355	6.255669999999999	6.78975
12 h after dark	6.6932	6.6120399999999995	6.83652