condition mean min max ZT0-3 698.85 698.85 698.85 ZT4-7 501.8 501.8 501.8 ZT8-11 392.25 392.25 392.25 ZT12-15 420.40000000000003 420.40000000000003 420.40000000000003 ZT16-19 698.2 698.2 698.2 ZT20-23 688.75 688.75 688.75