condition	mean	min	max
4 h after light	17.9341	16.6918	19.1764
8 h after light	13.77705	13.1091	14.445
12 h after light	17.4296	16.1805	18.6787
4 h after dark	27.82665	26.2847	29.3686
8 h after dark	29.05125	28.5702	29.5323
12 h after dark	27.56805	27.5568	27.5793