condition mean min max ZT0-3 0.017621333333333333 0.0 0.052864 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.02939025 0.0 0.0587805 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0