condition mean min max ZT0-3 99.18221666666666 69.19864999999999 115.9615 ZT4-7 88.58755 88.58755 88.58755 ZT8-11 67.92335 67.92335 67.92335 ZT12-15 58.106700000000004 57.7136 58.4998 ZT16-19 58.015 58.015 58.015 ZT20-23 90.6327 90.6327 90.6327