condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0139954 0.0139954 0.0139954 ZT8-11 0.0 0.0 0.0 ZT12-15 0.01426845 0.0 0.0285369 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0