condition mean min max ZT0-3 0.9092339999999999 0.781033 1.0374349999999999 ZT4-7 0.8395565 0.8395565 0.8395565 ZT8-11 0.8977845 0.8977845 0.8977845 ZT12-15 0 0 0 ZT16-19 2.451315 2.451315 2.451315 ZT20-23 1.111609 1.111609 1.111609