condition	mean	min	max
4 h after light	15.296700000000001	14.5648	16.0286
8 h after light	7.837165000000001	7.62855	8.04578
12 h after light	7.877485	7.10411	8.65086
4 h after dark	11.33415	10.5864	12.0819
8 h after dark	17.5527	17.5449	17.5605
12 h after dark	16.384149999999998	15.9194	16.8489