condition mean min max ZT0-3 735.1500000000001 735.1500000000001 735.1500000000001 ZT4-7 661.6 661.6 661.6 ZT8-11 588.0 588.0 588.0 ZT12-15 609.5 609.5 609.5 ZT16-19 660.25 660.25 660.25 ZT20-23 652.7 652.7 652.7