condition mean min max 4 h after light 13107.1 13107.1 13107.1 8 h after light 12848.599999999999 11461.8 14235.4 12 h after light 15757.2 12464.1 19050.3 4 h after dark 18715.5 17335.8 20095.2 8 h after dark 16977.95 15952.6 18003.3 12 h after dark 17819.5 16361.4 19277.6