condition	mean	min	max
4 h after light	6.25417	6.10681	6.3314699999999995
8 h after light	6.2531300000000005	6.10038	6.36953
12 h after light	6.139143333333333	5.80207	6.51869
4 h after dark	6.11224	5.97077	6.30844
8 h after dark	6.127696666666667	5.98754	6.22668
12 h after dark	6.170516666666667	5.9832	6.3849800000000005