condition mean min max ZT0-3 1492.4 1492.4 1492.4 ZT4-7 595.4 595.4 595.4 ZT8-11 484.79999999999995 484.79999999999995 484.79999999999995 ZT12-15 645.1 645.1 645.1 ZT16-19 756.5 756.5 756.5 ZT20-23 888.05 888.05 888.05