condition mean min max ZT0-3 71.63988333333333 59.3626 94.02414999999999 ZT4-7 95.44465 95.44465 95.44465 ZT8-11 126.55 126.55 126.55 ZT12-15 68.234675 40.7192 95.75014999999999 ZT16-19 27.7312 27.7312 27.7312 ZT20-23 21.3006 21.3006 21.3006