condition	mean	min	max
4 h after light	11.17081	9.74822	12.5934
8 h after light	15.19865	14.8957	15.5016
12 h after light	21.55225	20.5795	22.525
4 h after dark	23.0015	22.0984	23.9046
8 h after dark	21.359650000000002	20.6676	22.0517
12 h after dark	18.678350000000002	18.3827	18.974