condition mean min max ZT0-3 760.1 760.1 760.1 ZT4-7 421.9 421.9 421.9 ZT8-11 477.25 477.25 477.25 ZT12-15 564.4 564.4 564.4 ZT16-19 775.0 775.0 775.0 ZT20-23 775.4000000000001 775.4000000000001 775.4000000000001