condition mean min max ZT0-3 98.0603 98.0603 98.0603 ZT4-7 65.50595 65.50595 65.50595 ZT8-11 60.87625 60.87625 60.87625 ZT12-15 62.14915 62.14915 62.14915 ZT16-19 106.66525 106.66525 106.66525 ZT20-23 116.707 116.707 116.707