condition	mean	min	max
4 h after light	6.840685000000001	6.44606	7.23531
8 h after light	6.783905000000001	6.58544	6.98237
12 h after light	7.299405	6.70824	7.89057
4 h after dark	8.02928	7.59074	8.46782
8 h after dark	7.306295	7.17918	7.43341
12 h after dark	8.2183	7.69848	8.73812