condition mean min max ZT0-3 0.051252 0.0 0.102504 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.099742 0.08264200000000001 0.116842 ZT16-19 0.18724100000000002 0.18724100000000002 0.18724100000000002 ZT20-23 0.0 0.0 0.0