condition mean min max ZT0-3 0.022799475 0.0 0.04559895 ZT4-7 0.04495805 0.04495805 0.04495805 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.044784 0.044784 0.044784 ZT20-23 0.0 0.0 0.0