condition mean min max ZT0-3 40.7965888575 32.638618 48.954559715 ZT4-7 26.654851135 24.36245493 28.94724734 ZT8-11 24.66732418 24.31561524 25.01903312 ZT12-15 23.126040914999997 22.48494808 23.76713375 ZT16-19 24.532608053333334 24.43395932 24.631256786666665 ZT20-23 23.842420519999997 22.83200208 24.85283896