condition	mean	min	max
4 h after light	7.29673	7.094860000000001	7.522810000000001
8 h after light	7.804703333333333	7.643160000000001	7.89047
12 h after light	7.866493333333334	7.60094	8.06789
4 h after dark	7.666286666666666	7.49375	7.94457
8 h after dark	7.31274	7.09708	7.50175
12 h after dark	7.05622	6.85502	7.2132