condition	mean	min	max
4 h after light	8.300316666666667	8.12585	8.46955
8 h after light	8.33808	8.13713	8.50653
12 h after light	8.16638	7.893610000000001	8.46438
4 h after dark	8.11255	7.9095699999999995	8.47291
8 h after dark	8.18335	7.97865	8.36389
12 h after dark	7.879763333333334	7.66925	7.988630000000001