condition	mean	min	max
0 h after light	18.1392	17.6406	18.6378
4 h after light	13.19735	12.5455	13.8492
8 h after light	18.1244	17.2702	18.9786
4 h after dark	19.158749999999998	17.5839	20.7336
8 h after dark	17.26075	16.1396	18.3819
12 h after dark	18.439	16.9507	19.9273