condition mean min max ZT0-3 0.022508283333333334 0.0 0.0448893 ZT4-7 0.0213645 0.0213645 0.0213645 ZT8-11 0.0 0.0 0.0 ZT12-15 0.010559025 0.0 0.02111805 ZT16-19 0.0209736 0.0209736 0.0209736 ZT20-23 0.0 0.0 0.0