condition mean min max ZT0-3 138.35 138.35 138.35 ZT4-7 117.3 117.3 117.3 ZT8-11 178.35000000000002 178.35000000000002 178.35000000000002 ZT12-15 124.9 124.9 124.9 ZT16-19 135.1 135.1 135.1 ZT20-23 92.15 92.15 92.15