condition	mean	min	max
4 h after light	21.0454	19.9695	22.1213
8 h after light	18.060499999999998	16.5139	19.6071
12 h after light	17.96825	15.2816	20.6549
4 h after dark	20.93105	20.2844	21.5777
8 h after dark	24.35015	23.7939	24.9064
12 h after dark	23.4347	22.0718	24.7976