condition mean min max ZT0-3 127.35 127.35 127.35 ZT4-7 71.3 71.3 71.3 ZT8-11 117.4 117.4 117.4 ZT12-15 240.7 240.7 240.7 ZT16-19 179.55 179.55 179.55 ZT20-23 144.5 144.5 144.5