condition mean min max ZT0-3 0.113380875 0.11234345000000001 0.1144183 ZT4-7 0.11428179999999999 0.11428179999999999 0.11428179999999999 ZT8-11 0.0969045 0.0969045 0.0969045 ZT12-15 0 0 0 ZT16-19 0.08035445 0.08035445 0.08035445 ZT20-23 0.01621325 0.01621325 0.01621325