condition	mean	min	max
4 h after light	15.47495	14.4229	16.527
8 h after light	16.9949	16.909	17.0808
12 h after light	19.45165	19.1213	19.782
4 h after dark	21.34825	20.4653	22.2312
8 h after dark	19.72515	19.2638	20.1865
12 h after dark	19.44845	19.1588	19.7381