condition	mean	min	max
4 h after light	7.929143333333333	7.88868	8.00198
8 h after light	8.117773333333334	7.98465	8.32737
12 h after light	8.11685	8.01944	8.17487
4 h after dark	7.753926666666667	7.5448699999999995	7.87743
8 h after dark	7.538173333333333	7.4061699999999995	7.65181
12 h after dark	6.963	6.668130000000001	7.12235