condition	mean	min	max
4 h after light	8.535343333333334	8.39273	8.663739999999999
8 h after light	8.29273	7.96396	8.50361
12 h after light	8.567326666666666	8.10577	8.82859
4 h after dark	8.142883333333334	7.822260000000001	8.35186
8 h after dark	7.9709200000000004	7.60027	8.22315
12 h after dark	8.524033333333334	8.29113	8.748389999999999