condition	mean	min	max
4 h after light	17.7209165	16.653442	18.788391
8 h after light	17.3730575	17.109562	17.636553
12 h after light	18.2062055	18.112676	18.299735
4 h after dark	18.2593515	18.112676	18.406027
8 h after dark	18.212269	16.769888	19.65465
12 h after dark	17.408312	17.408312	17.408312