condition mean min max ZT0-3 0.012649583333333334 0.0 0.03794875 ZT4-7 0.00320919 0.00320919 0.00320919 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 0.104443 0.104443 0.104443