condition	mean	min	max
4 h after light	6.3395166666666665	6.08022	6.593539999999999
8 h after light	6.14166	5.92652	6.32855
12 h after light	6.636653333333333	6.58011	6.7210600000000005
4 h after dark	6.83864	6.7550300000000005	6.9454199999999995
8 h after dark	6.879059999999999	6.7383	6.994339999999999
12 h after dark	7.04881	6.608039999999999	7.394839999999999