condition mean min max ZT0-3 0.00397932 0.00397932 0.00397932 ZT4-7 0.00569295 0.00569295 0.00569295 ZT8-11 0.01013229 0.01013229 0.01013229 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.002345305 0.002345305 0.002345305