condition	mean	min	max
4 h after light	18.0570915	15.620343	20.49384
8 h after light	17.861383500000002	17.610091	18.112676
12 h after light	15.914852	15.057592	16.772112
4 h after dark	23.015102499999998	19.502847	26.527358
8 h after dark	19.212971	16.542571	21.883371
12 h after dark	15.664337	15.664337	15.664337