condition mean min max ZT0-3 1.393505 1.393505 1.393505 ZT4-7 0.96221 0.96221 0.96221 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0