condition mean min max ZT0-3 0.499372 0.327651 0.6710929999999999 ZT4-7 0.1708725 0.1708725 0.1708725 ZT8-11 0.165912 0.165912 0.165912 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.3303245 0.3303245 0.3303245