condition mean min max ZT0-3 102.15 102.15 102.15 ZT4-7 132.6 132.6 132.6 ZT8-11 202.75 202.75 202.75 ZT12-15 93.94999999999999 93.94999999999999 93.94999999999999 ZT16-19 70.25 70.25 70.25 ZT20-23 123.05000000000001 123.05000000000001 123.05000000000001