condition mean min max ZT0-3 0.45356549999999995 0.398997 0.508134 ZT4-7 0.7787120000000001 0.7787120000000001 0.7787120000000001 ZT8-11 0.709998 0.709998 0.709998 ZT12-15 0 0 0 ZT16-19 0.6330525 0.6330525 0.6330525 ZT20-23 0.6695195 0.6695195 0.6695195