condition mean min max ZT0-3 1883.55 1883.55 1883.55 ZT4-7 2742.3 2742.3 2742.3 ZT8-11 2773.75 2773.75 2773.75 ZT12-15 3045.95 3045.95 3045.95 ZT16-19 2457.2 2457.2 2457.2 ZT20-23 2116.3 2116.3 2116.3