condition mean min max ZT0-3 81.22203333333333 44.391549999999995 114.799 ZT4-7 34.91285 34.91285 34.91285 ZT8-11 38.26485 38.26485 38.26485 ZT12-15 93.924875 82.87925 104.9705 ZT16-19 100.8836 100.8836 100.8836 ZT20-23 144.8355 144.8355 144.8355