condition	mean	min	max
4 h after light	7.796156666666667	7.57465	7.95787
8 h after light	7.35044	7.30054	7.38075
12 h after light	8.126913333333334	7.76935	8.43782
4 h after dark	7.7495433333333335	7.394310000000001	7.9565399999999995
8 h after dark	7.823160000000001	7.6584	7.92967
12 h after dark	8.383363333333334	8.28726	8.53585