condition mean min max ZT0-3 2339.55 2339.55 2339.55 ZT4-7 1876.9 1876.9 1876.9 ZT8-11 2226.3 2226.3 2226.3 ZT12-15 2531.25 2531.25 2531.25 ZT16-19 3014.45 3014.45 3014.45 ZT20-23 2958.25 2958.25 2958.25