condition	mean	min	max
4 h after light	6.088229999999999	5.86522	6.4128
8 h after light	5.905493333333333	5.7451099999999995	6.18241
12 h after light	5.9023900000000005	5.71074	6.21161
4 h after dark	6.02076	5.87681	6.0934800000000005
8 h after dark	5.876123333333333	5.73881	5.96643
12 h after dark	5.90162	5.7769699999999995	6.13663