condition mean min max 4 h after light 10.355473333333334 8.19877 12.52627 8 h after light 14.474569 9.890497 20.82186 12 h after light 20.881529999999998 15.682220000000001 28.009079999999997 16 h after light 21.566993333333333 15.841339999999999 31.7196 4 h after dark 12.805083333333334 11.859910000000001 13.844079999999998 8 h after dark 7.554951 4.314086 9.54621