condition	mean	min	max
4 h after light	6.880540000000001	6.85125	6.9173100000000005
8 h after light	6.754409999999999	6.58547	6.944539999999999
12 h after light	6.744273333333333	6.60571	6.9553899999999995
4 h after dark	6.817	6.67148	7.0620899999999995
8 h after dark	6.748973333333333	6.5035099999999995	7.14876
12 h after dark	6.584006666666666	6.52846	6.68146