condition mean min max ZT0-3 0.75185375 0.716909 0.7867985 ZT4-7 0.7295400000000001 0.7295400000000001 0.7295400000000001 ZT8-11 0.605289 0.605289 0.605289 ZT12-15 0 0 0 ZT16-19 0.8330155 0.8330155 0.8330155 ZT20-23 0.5976755 0.5976755 0.5976755