condition	mean	min	max
4 h after light	6.7085550000000005	6.035	7.38211
8 h after light	5.4866150000000005	4.92773	6.0455
12 h after light	4.727595	4.63136	4.82383
4 h after dark	6.224485	5.70295	6.74602
8 h after dark	5.65122	5.26562	6.03682
12 h after dark	6.659975	6.50504	6.81491