condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.026989257333333336 0.0 0.05397851466666667 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.037484547 0.0 0.074969094 ZT20-23 0.0 0.0 0.0