condition	mean	min	max
4 h after light	6.778263333333333	6.59985	7.129239999999999
8 h after light	8.790946666666667	8.637960000000001	9.027510000000001
12 h after light	8.459056666666667	8.36252	8.642510000000001
4 h after dark	7.518800000000001	7.32178	7.753310000000001
8 h after dark	6.696446666666667	6.22891	7.04207
12 h after dark	6.06544	6.02606	6.10942