condition mean min max ZT0-3 1861.8000000000002 1861.8000000000002 1861.8000000000002 ZT4-7 2362.5 2362.5 2362.5 ZT8-11 1951.25 1951.25 1951.25 ZT12-15 1454.2 1454.2 1454.2 ZT16-19 1282.7 1282.7 1282.7 ZT20-23 1427.85 1427.85 1427.85