condition mean min max ZT0-3 635.45 635.45 635.45 ZT4-7 306.5 306.5 306.5 ZT8-11 408.25 408.25 408.25 ZT12-15 537.0999999999999 537.0999999999999 537.0999999999999 ZT16-19 530.4 530.4 530.4 ZT20-23 519.5 519.5 519.5