condition	mean	min	max
4 h after light	6.69482	6.60588	6.75339
8 h after light	6.3013433333333335	6.15905	6.41892
12 h after light	6.5015	6.3891	6.72397
4 h after dark	6.911016666666667	6.802160000000001	7.0652
8 h after dark	7.092383333333333	6.87944	7.40614
12 h after dark	7.2726299999999995	7.21052	7.3863199999999996