condition	mean	min	max
4 h after light	5.9510499999999995	5.8126	6.22697
8 h after light	6.237616666666667	6.18659	6.32793
12 h after light	6.169656666666667	6.0262	6.41904
4 h after dark	6.015503333333333	5.86269	6.23414
8 h after dark	5.97779	5.802309999999999	6.11446
12 h after dark	6.097903333333333	6.00106	6.27545