condition	mean	min	max
4 h after light	7.374306666666667	6.734310000000001	7.74907
8 h after light	6.558456666666666	5.96625	7.14965
12 h after light	6.811823333333334	5.84186	7.42245
4 h after dark	7.18244	6.47125	7.61533
8 h after dark	7.734053333333333	7.327189999999999	8.191880000000001
12 h after dark	8.11814	7.257860000000001	8.55