condition	mean	min	max
0 h after light	19.213	17.3343	21.0917
4 h after light	7.311025	7.04164	7.58041
8 h after light	7.652844999999999	7.58116	7.72453
4 h after dark	12.55715	11.7637	13.3506
8 h after dark	12.508199999999999	12.4871	12.5293
12 h after dark	16.04685	13.4454	18.6483