condition mean min max ZT0-3 2876.65 2876.65 2876.65 ZT4-7 2806.4 2806.4 2806.4 ZT8-11 2996.35 2996.35 2996.35 ZT12-15 2495.3 2495.3 2495.3 ZT16-19 2703.75 2703.75 2703.75 ZT20-23 2896.05 2896.05 2896.05