condition	mean	min	max
4 h after light	18.289203	18.108618	18.469788
8 h after light	18.1344875	18.108618	18.160357
12 h after light	20.101469	19.464396	20.738542
4 h after dark	18.447371	17.440923	19.453819
8 h after dark	18.4408545	18.108618	18.773091
12 h after dark	16.073571	16.073571	16.073571