condition	mean	min	max
4 h after light	7.843193333333333	7.64168	8.19052
8 h after light	7.737463333333333	7.4252	8.156989999999999
12 h after light	7.76262	7.46437	8.093860000000001
4 h after dark	7.842840000000001	7.616810000000001	8.20105
8 h after dark	7.791696666666667	7.48199	8.15174
12 h after dark	7.804646666666667	7.618289999999999	8.0092