condition	mean	min	max
4 h after light	19.0579345	18.154445	19.961424
8 h after light	17.397930000000002	15.717472	19.078388
12 h after light	16.362769	15.925235	16.800303
4 h after dark	17.5788815	14.525915	20.631848
8 h after dark	15.4115805	14.453579	16.369582
12 h after dark	11.607024	11.607024	11.607024