condition mean min max ZT0-3 0.0239714 0.0 0.0479428 ZT4-7 0.0959479 0.0959479 0.0959479 ZT8-11 0.0487159 0.0487159 0.0487159 ZT12-15 0 0 0 ZT16-19 0.04700205 0.04700205 0.04700205 ZT20-23 0.0 0.0 0.0