condition mean min max ZT0-3 0.3494275 0.3494275 0.3494275 ZT4-7 0.14831149999999999 0.14831149999999999 0.14831149999999999 ZT8-11 0.05751315 0.05751315 0.05751315 ZT12-15 0.44043050000000006 0.44043050000000006 0.44043050000000006 ZT16-19 0.6831885 0.6831885 0.6831885 ZT20-23 0.35835300000000003 0.35835300000000003 0.35835300000000003