condition	mean	min	max
4 h after light	18.4709705	18.229283	18.712658
8 h after light	16.449591	16.449591	16.449591
12 h after light	15.819322500000002	15.189054	16.449591
4 h after dark	15.8472485	14.380595	17.313902
8 h after dark	15.852615	15.255639	16.449591
12 h after dark	17.801426	17.801426	17.801426