condition	mean	min	max
4 h after light	6.68304	6.5096099999999995	6.776660000000001
8 h after light	7.345323333333333	7.12167	7.50908
12 h after light	7.101003333333334	7.026669999999999	7.14198
4 h after dark	7.730553333333334	7.6600600000000005	7.83075
8 h after dark	7.472583333333334	7.3643	7.62944
12 h after dark	7.626073333333334	7.089580000000001	7.985360000000001