condition mean min max ZT0-3 34.9999 34.9999 34.9999 ZT4-7 28.5509 28.5509 28.5509 ZT8-11 27.2733 27.2733 27.2733 ZT12-15 30.02295 30.02295 30.02295 ZT16-19 38.016 38.016 38.016 ZT20-23 32.9657 32.9657 32.9657