condition mean min max 3 h after light 7.01862 6.68048 7.46314 6 h after light 8.66685 6.98985 9.85527 9 h after light 10.181136666666667 9.44694 11.5191 12 h after light 12.644974999999999 11.6702 13.7851 3 h after dark 17.275833333333335 16.225 18.7671 6 h after dark 16.239733333333334 13.7663 18.506 9 h after dark 11.26745 9.90595 12.794 12 h after dark 7.188855 6.61128 7.76643