condition mean min max ZT0-3 629.8 629.8 629.8 ZT4-7 701.9 701.9 701.9 ZT8-11 568.45 568.45 568.45 ZT12-15 493.35 493.35 493.35 ZT16-19 523.65 523.65 523.65 ZT20-23 552.85 552.85 552.85