condition	mean	min	max
4 h after light	6.247883333333333	6.221769999999999	6.27565
8 h after light	7.19117	6.75466	7.47938
12 h after light	6.93509	6.75025	7.25522
4 h after dark	6.587556666666667	6.47549	6.74453
8 h after dark	6.24217	5.979769999999999	6.44684
12 h after dark	6.0355533333333335	5.98613	6.07095