condition	mean	min	max
4 h after light	7.584683333333333	7.52217	7.650410000000001
8 h after light	7.127033333333333	6.97346	7.23263
12 h after light	7.488553333333333	7.3865300000000005	7.623589999999999
4 h after dark	7.73836	7.5960600000000005	7.85155
8 h after dark	7.9330766666666666	7.70735	8.20461
12 h after dark	7.671250000000001	7.63271	7.73048