condition mean min max ZT0-3 41.186233333333334 34.06035 49.702 ZT4-7 18.8582 18.8582 18.8582 ZT8-11 16.8806 16.8806 16.8806 ZT12-15 60.362175 48.7846 71.93975 ZT16-19 64.05955 64.05955 64.05955 ZT20-23 65.7703 65.7703 65.7703