condition mean min max ZT0-3 0.02569115 0.025651 0.0257313 ZT4-7 0.0261716 0.0261716 0.0261716 ZT8-11 0.0508235 0.0508235 0.0508235 ZT12-15 0 0 0 ZT16-19 0.0253261 0.0253261 0.0253261 ZT20-23 0.0 0.0 0.0