condition mean min max ZT0-3 21.7822 21.46915 22.09525 ZT4-7 27.6199 27.6199 27.6199 ZT8-11 33.14175 33.14175 33.14175 ZT12-15 0 0 0 ZT16-19 31.0861 31.0861 31.0861 ZT20-23 28.65535 28.65535 28.65535