condition	mean	min	max
4 h after light	6.259816666666667	6.14994	6.34335
8 h after light	6.024220000000001	5.82945	6.1631800000000005
12 h after light	5.981773333333334	5.73681	6.12706
4 h after dark	6.23024	6.13846	6.2834
8 h after dark	6.370286666666667	6.08143	6.58787
12 h after dark	6.775666666666667	6.4281	7.043310000000001