condition mean min max 4 h after light 1531.0061113333334 1440.165 1658.516667 8 h after light 1821.1038886666668 1649.303333 2028.565 12 h after light 2612.0233333333335 2172.51 2939.423333 1.5 h after dark 3114.686667 2530.636667 3740.896667 5.5 h after dark 2595.4144443333334 1952.03 3306.72 9.5 h after dark 2055.178889 1778.33 2235.566667