condition	mean	min	max
4 h after light	8.19489	7.2160899999999994	8.71862
8 h after light	8.404836666666666	7.61802	8.830010000000001
12 h after light	9.09265	8.437510000000001	9.439969999999999
4 h after dark	7.581636666666666	7.055110000000001	8.13013
8 h after dark	6.954673333333333	6.36811	7.30633
12 h after dark	6.14863	5.32866	6.75103