condition	mean	min	max
4 h after light	17.05344	14.335212	19.771668
8 h after light	12.3611775	12.157479	12.564876
12 h after light	15.435040999999998	12.909279	17.960803
4 h after dark	10.9880475	9.215184	12.760911
8 h after dark	11.1187025	9.904957	12.332448
12 h after dark	19.598419	19.598419	19.598419