condition mean min max ZT0-3 0.6227357499999999 0.481394 0.7640775 ZT4-7 0.742669 0.742669 0.742669 ZT8-11 0.8641495 0.8641495 0.8641495 ZT12-15 0 0 0 ZT16-19 1.39903 1.39903 1.39903 ZT20-23 1.72579 1.72579 1.72579