condition	mean	min	max
4 h after light	6.67602	6.60014	6.772130000000001
8 h after light	6.965306666666667	6.83298	7.051819999999999
12 h after light	6.793480000000001	6.586310000000001	7.14527
4 h after dark	6.788476666666667	6.57837	7.08363
8 h after dark	6.823933333333333	6.67363	7.03998
12 h after dark	6.923543333333334	6.67829	7.258030000000001