condition mean min max 4 h after light 10.48367 6.68761 14.6072 8 h after light 11.95216 8.78618 15.8348 12 h after light 20.4021 19.1826 21.1783 4 h after dark 26.9132 21.8616 34.0333 8 h after dark 21.186466666666664 14.4515 34.5746 12 h after dark 14.284253333333334 9.60506 19.1414