condition mean min max ZT0-3 435.6 435.6 435.6 ZT4-7 643.9 643.9 643.9 ZT8-11 609.4000000000001 609.4000000000001 609.4000000000001 ZT12-15 622.45 622.45 622.45 ZT16-19 484.85 484.85 484.85 ZT20-23 505.1 505.1 505.1