condition mean min max ZT0-3 11.368846984166666 11.341626963333333 11.396067004999999 ZT4-7 11.744235334166667 10.93808451 12.550386158333334 ZT8-11 10.601401237000001 10.185947571 11.016854903 ZT12-15 12.355724234499998 12.002457378999999 12.70899109 ZT16-19 13.189036636666668 12.854137803333334 13.52393547 ZT20-23 11.7557788685 10.520305343666667 12.991252393333333