condition mean min max ZT0-3 0.36058 0.17699 0.54417 ZT4-7 0.911066 0.911066 0.911066 ZT8-11 0.1792445 0.1792445 0.1792445 ZT12-15 0 0 0 ZT16-19 0.356576 0.356576 0.356576 ZT20-23 0.0 0.0 0.0