condition	mean	min	max
4 h after light	8.43674	8.31942	8.53855
8 h after light	8.427086666666666	8.3651	8.4971
12 h after light	8.42816	8.14676	8.672089999999999
4 h after dark	8.231903333333333	8.09539	8.37529
8 h after dark	7.96262	7.860580000000001	8.1244
12 h after dark	8.23602	8.05081	8.33141