condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0194163 0.0194163 0.0194163 ZT8-11 0.0204563 0.0204563 0.0204563 ZT12-15 0.011305225 0.0 0.02261045 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0