condition mean min max ZT0-3 2528.35 2528.35 2528.35 ZT4-7 2840.5 2840.5 2840.5 ZT8-11 2689.7 2689.7 2689.7 ZT12-15 2089.6 2089.6 2089.6 ZT16-19 2562.85 2562.85 2562.85 ZT20-23 2614.7 2614.7 2614.7