condition mean min max ZT0-3 0.016704283333333333 0.01568945 0.01761465 ZT4-7 0.01537925 0.01537925 0.01537925 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0331834 0.01790925 0.04845755 ZT16-19 0.0312999 0.0312999 0.0312999 ZT20-23 0.034665 0.034665 0.034665