condition	mean	min	max
0 h after light	6.435105	6.39532	6.47489
4 h after light	6.821225	6.64083	7.00162
8 h after light	6.48593	6.46181	6.51005
4 h after dark	8.03588	7.14967	8.92209
8 h after dark	8.980075	8.31124	9.64891
12 h after dark	6.44862	6.25084	6.6464