condition mean min max ZT0-3 0.32592675 0.0929555 0.558898 ZT4-7 0.047421 0.047421 0.047421 ZT8-11 0.0473751 0.0473751 0.0473751 ZT12-15 0 0 0 ZT16-19 0.09159745 0.09159745 0.09159745 ZT20-23 0.0462226 0.0462226 0.0462226