condition mean min max ZT0-3 52.93625 52.93625 52.93625 ZT4-7 25.200699999999998 25.200699999999998 25.200699999999998 ZT8-11 6.602485 6.602485 6.602485 ZT12-15 8.52056 8.52056 8.52056 ZT16-19 38.869 38.869 38.869 ZT20-23 51.34935 51.34935 51.34935