condition	mean	min	max
4 h after light	19.750974499999998	18.833723	20.668226
8 h after light	17.6518995	15.634331	19.669468
12 h after light	14.4919395	14.419163	14.564716
4 h after dark	15.791639	13.88724	17.696038
8 h after dark	20.551796500000002	18.270908	22.832685
12 h after dark	14.827661	14.827661	14.827661