condition	mean	min	max
4 h after light	17.630215999999997	17.574837	17.685595
8 h after light	15.5115355	14.859336	16.163735
12 h after light	17.700038	17.156471	18.243605
4 h after dark	19.454680500000002	18.57115	20.338211
8 h after dark	20.494354	19.780118	21.20859
12 h after dark	20.009243	20.009243	20.009243