condition mean min max 3 h after light 0.9550366666666666 0.581454 1.35047 6 h after light 1.0436463333333332 0.768239 1.29127 9 h after light 0.8418549999999999 0.689653 1.1095 12 h after light 1.6754200000000001 1.26411 2.14638 3 h after dark 2.59743 2.34902 2.97983 6 h after dark 1.9077433333333333 1.59185 2.23114 9 h after dark 1.0623426666666667 0.79606 1.5178 12 h after dark 1.19634 1.13357 1.25911