condition mean min max ZT0-3 85.01608877749999 75.686291445 94.34588611 ZT4-7 102.80304413333334 102.24954082 103.35654744666667 ZT8-11 101.52911099166667 98.98682348 104.07139850333334 ZT12-15 87.44621529 84.06833110333334 90.82409947666667 ZT16-19 87.4889721 84.79970694666666 90.17823725333334 ZT20-23 81.46757705499999 77.28743871666667 85.64771539333333