condition mean min max ZT0-3 3858.0 3858.0 3858.0 ZT4-7 3916.9 3916.9 3916.9 ZT8-11 3472.05 3472.05 3472.05 ZT12-15 3986.9 3986.9 3986.9 ZT16-19 4511.55 4511.55 4511.55 ZT20-23 4249.35 4249.35 4249.35