condition	mean	min	max
4 h after light	6.76943	6.59675	6.8776399999999995
8 h after light	6.407873333333333	6.34057	6.52646
12 h after light	6.455246666666667	6.24998	6.58415
4 h after dark	6.4486300000000005	6.36439	6.5316
8 h after dark	6.721113333333333	6.5972100000000005	6.80232
12 h after dark	7.069560000000001	6.9283600000000005	7.199660000000001