condition	mean	min	max
4 h after light	15.55095	14.4789	16.623
8 h after light	17.268050000000002	16.4101	18.126
12 h after light	20.376199999999997	19.4806	21.2718
4 h after dark	21.706449999999997	21.7004	21.7125
8 h after dark	20.609299999999998	20.3766	20.842
12 h after dark	20.65655	20.4076	20.9055