condition	mean	min	max
4 h after light	18.081629	14.837041	21.326217
8 h after light	21.8938575	20.382375	23.40534
12 h after light	19.517186	19.498195	19.536177
4 h after dark	21.760742999999998	18.730206	24.79128
8 h after dark	20.7392735	14.590705	26.887842
12 h after dark	19.280918	19.280918	19.280918