condition mean min max 4 h after light 4.75354 4.53135 5.14583 8 h after light 4.698066666666667 4.44475 5.1809400000000005 12 h after light 4.510493333333334 4.34446 4.6919 4 h after dark 4.52078 4.50568 4.53509 8 h after dark 4.46555 4.22395 4.63908 12 h after dark 4.58909 4.429869999999999 4.86837