condition mean min max 4 h after light 8.947275000000001 7.84615 10.0484 8 h after light 9.686485 9.18137 10.1916 12 h after light 9.888539999999999 9.26288 10.5142 4 h after dark 10.124386666666666 9.38554 11.094 8 h after dark 12.20514 9.83512 13.5718 12 h after dark 9.85797 9.40885 10.1908