condition mean min max ZT0-3 3773.45 3773.45 3773.45 ZT4-7 2663.2 2663.2 2663.2 ZT8-11 2488.95 2488.95 2488.95 ZT12-15 4668.55 4668.55 4668.55 ZT16-19 5495.25 5495.25 5495.25 ZT20-23 5138.950000000001 5138.950000000001 5138.950000000001