condition	mean	min	max
4 h after light	7.793643333333334	7.65508	7.88572
8 h after light	8.298110000000001	8.18565	8.50277
12 h after light	8.027063333333334	7.837560000000001	8.36439
4 h after dark	8.745663333333333	8.4904	8.88829
8 h after dark	8.747803333333334	8.63555	8.81842
12 h after dark	8.54401	8.26437	8.68777