condition	mean	min	max
4 h after light	21.0823	18.0417	24.1229
8 h after light	17.3782	16.5719	18.1845
12 h after light	19.94455	19.5839	20.3052
4 h after dark	21.1267	20.7286	21.6926
8 h after dark	25.620166666666666	23.1987	28.3553
12 h after dark	21.9818	20.9693	23.0737