condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.02440964533333333 0.0 0.04881929066666666 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.024610328 0.0 0.049220656 ZT20-23 0.0 0.0 0.0