condition mean min max ZT0-3 142.35000000000002 142.35000000000002 142.35000000000002 ZT4-7 123.2 123.2 123.2 ZT8-11 157.85 157.85 157.85 ZT12-15 110.5 110.5 110.5 ZT16-19 105.75 105.75 105.75 ZT20-23 122.39999999999999 122.39999999999999 122.39999999999999