condition mean min max ZT0-3 150.616672 150.616672 150.616672 ZT4-7 100.6967105 100.6967105 100.6967105 ZT8-11 96.2698235 96.2698235 96.2698235 ZT12-15 112.7542755 112.7542755 112.7542755 ZT16-19 130.735894 130.735894 130.735894 ZT20-23 93.991559 93.991559 93.991559