condition	mean	min	max
0 h after light	18.7684	18.2249	19.3119
4 h after light	27.02655	20.9722	33.0809
8 h after light	18.21865	15.6697	20.7676
4 h after dark	13.641925	9.34595	17.9379
8 h after dark	16.34355	13.5069	19.1802
12 h after dark	17.46895	12.5773	22.3606