condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.01057635 0.01057635 0.01057635 ZT8-11 0.0115659 0.0115659 0.0115659 ZT12-15 0.0 0.0 0.0 ZT16-19 0.00935195 0.00935195 0.00935195 ZT20-23 0.0060863 0.0060863 0.0060863