condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.024108400000000002 0.024108400000000002 0.024108400000000002 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0202519 0.0202519 0.0202519 ZT20-23 0.017714 0.017714 0.017714