condition mean min max ZT0-3 851.6 851.6 851.6 ZT4-7 704.0 704.0 704.0 ZT8-11 558.85 558.85 558.85 ZT12-15 598.6500000000001 598.6500000000001 598.6500000000001 ZT16-19 768.75 768.75 768.75 ZT20-23 888.1500000000001 888.1500000000001 888.1500000000001