condition mean min max ZT0-3 30.084233333333334 22.83845 35.1823 ZT4-7 18.357300000000002 18.357300000000002 18.357300000000002 ZT8-11 21.556 21.556 21.556 ZT12-15 29.0974 26.59165 31.60315 ZT16-19 45.91825 45.91825 45.91825 ZT20-23 41.403499999999994 41.403499999999994 41.403499999999994