condition mean min max 3 h after light 7.883923333333334 7.45534 8.52781 6 h after light 8.70685 6.81324 11.4025 9 h after light 8.16772 7.94055 8.40749 12 h after light 6.699493333333333 6.48788 6.81917 3 h after dark 13.2411 11.8721 14.5272 6 h after dark 14.5468 13.2447 15.2892 9 h after dark 15.410433333333332 14.3601 17.3909 12 h after dark 15.472933333333334 12.2944 18.4521