condition	mean	min	max
4 h after light	8.024876666666668	7.89695	8.14423
8 h after light	7.94129	7.8068100000000005	8.130360000000001
12 h after light	8.026779999999999	7.9144	8.10375
4 h after dark	7.7023633333333335	7.57222	7.915789999999999
8 h after dark	7.83083	7.78218	7.91137
12 h after dark	7.9423433333333335	7.91555	7.9786600000000005