condition	mean	min	max
4 h after light	3.99391	3.94211	4.03397
8 h after light	4.055093333333333	4.0142	4.13512
12 h after light	4.02784	3.94484	4.15264
4 h after dark	4.076553333333333	4.01475	4.13659
8 h after dark	4.018073333333334	3.9615699999999996	4.0719199999999995
12 h after dark	4.031546666666666	3.99655	4.083