condition	mean	min	max
4 h after light	6.716625	5.16883	8.26442
8 h after light	6.928025	6.84435	7.0117
12 h after light	6.035235	5.83475	6.23572
4 h after dark	7.36175	6.93633	7.78717
8 h after dark	6.541650000000001	6.41568	6.66762
12 h after dark	7.155725	6.95883	7.35262