condition mean min max 3 h after light 1.57451 1.18211 1.97231 6 h after light 2.6136866666666667 2.17122 3.2155 9 h after light 3.9667333333333334 2.00298 5.25579 12 h after light 8.1199475 2.79591 20.8785 3 h after dark 25.381666666666668 20.4359 27.9262 6 h after dark 17.448999999999998 15.2568 19.9831 9 h after dark 17.4874 15.6661 19.0742 12 h after dark 29.397949999999998 26.3981 32.3978