condition	mean	min	max
4 h after light	18.53537	18.025286	19.045454
8 h after light	18.327846	16.402685	20.253007
12 h after light	16.504590999999998	16.148439	16.860743
4 h after dark	16.908962000000002	14.63953	19.178394
8 h after dark	15.412099999999999	14.259914	16.564286
12 h after dark	16.881069	16.881069	16.881069