condition mean min max ZT0-3 540.25 540.25 540.25 ZT4-7 663.6 663.6 663.6 ZT8-11 669.7 669.7 669.7 ZT12-15 921.4 921.4 921.4 ZT16-19 813.35 813.35 813.35 ZT20-23 704.4 704.4 704.4