condition mean min max 3 h after light 0.8670583333333334 0.612931 1.16367 6 h after light 0.7965036666666667 0.70906 0.954145 9 h after light 0.600797 0.437663 0.71721 12 h after light 0.87799775 0.609363 1.26599 3 h after dark 1.9814666666666665 1.73538 2.39091 6 h after dark 1.2863146666666667 0.713934 1.95108 9 h after dark 1.21808 1.0683 1.45703 12 h after dark 1.4396849999999999 1.24259 1.63678