condition mean min max 4 h after light 5.111626666666667 5.0482 5.20725 8 h after light 4.9514233333333335 4.8705 5.04261 12 h after light 5.024286666666667 4.94695 5.08482 4 h after dark 5.096993333333334 5.01353 5.1471800000000005 8 h after dark 5.00753 4.805680000000001 5.16486 12 h after dark 5.0906400000000005 4.975230000000001 5.3105400000000005