condition mean min max ZT0-3 0.019488600000000002 0.019488600000000002 0.019488600000000002 ZT4-7 0.0247963 0.0247963 0.0247963 ZT8-11 0.01345315 0.01345315 0.01345315 ZT12-15 0.01226805 0.01226805 0.01226805 ZT16-19 0.0107229 0.0107229 0.0107229 ZT20-23 0.0266784 0.0266784 0.0266784