condition mean min max 4 h after light 3.5664333333333333 3.5588900000000003 3.5724 8 h after light 3.63941 3.6259 3.6491599999999997 12 h after light 3.6225300000000002 3.56054 3.67781 4 h after dark 3.6814833333333334 3.61321 3.7890300000000003 8 h after dark 3.5991833333333334 3.58891 3.60945 12 h after dark 3.6117199999999996 3.5970699999999995 3.6308199999999995