condition mean min max ZT0-3 14.8245 14.8245 14.8245 ZT4-7 10.353105 10.353105 10.353105 ZT8-11 13.332049999999999 13.332049999999999 13.332049999999999 ZT12-15 14.63785 14.63785 14.63785 ZT16-19 17.4024 17.4024 17.4024 ZT20-23 18.07685 18.07685 18.07685