condition	mean	min	max
0 h after light	21.0835	20.922	21.245
4 h after light	14.03915	13.4194	14.6589
8 h after light	14.4233	13.7777	15.0689
4 h after dark	13.01365	12.9664	13.0609
8 h after dark	11.7595	11.4569	12.0621
12 h after dark	16.27495	14.0651	18.4848