condition mean min max ZT0-3 0.044472725000000005 0.04395315 0.0449923 ZT4-7 0.17892385 0.17892385 0.17892385 ZT8-11 0.04579945 0.04579945 0.04579945 ZT12-15 0 0 0 ZT16-19 0.08855099999999999 0.08855099999999999 0.08855099999999999 ZT20-23 0.0446853 0.0446853 0.0446853