condition	mean	min	max
4 h after light	6.731915	5.97433	7.4895
8 h after light	5.98196	5.89593	6.06799
12 h after light	7.87781	6.74625	9.00937
4 h after dark	6.45226	5.36859	7.53593
8 h after dark	5.48241	5.21526	5.74956
12 h after dark	6.3964300000000005	5.73299	7.05987