condition mean min max ZT0-3 87.3651 87.3651 87.3651 ZT4-7 77.0329 77.0329 77.0329 ZT8-11 53.8823 53.8823 53.8823 ZT12-15 44.8344 44.8344 44.8344 ZT16-19 54.589200000000005 54.589200000000005 54.589200000000005 ZT20-23 87.18905000000001 87.18905000000001 87.18905000000001