condition	mean	min	max
0 h after light	15.705449999999999	15.5338	15.8771
4 h after light	19.31615	18.3699	20.2624
8 h after light	19.640050000000002	18.6542	20.6259
4 h after dark	20.9546	20.5482	21.361
8 h after dark	19.6978	18.7899	20.6057
12 h after dark	17.1496	16.8875	17.4117