condition mean min max ZT0-3 24.8398 24.8398 24.8398 ZT4-7 19.90205 19.90205 19.90205 ZT8-11 19.6833 19.6833 19.6833 ZT12-15 24.0559 24.0559 24.0559 ZT16-19 26.4568 26.4568 26.4568 ZT20-23 26.2299 26.2299 26.2299