condition mean min max ZT0-3 0.06067975 0.0 0.1213595 ZT4-7 0.0 0.0 0.0 ZT8-11 0.1233165 0.1233165 0.1233165 ZT12-15 0 0 0 ZT16-19 0.952767 0.952767 0.952767 ZT20-23 0.7188844999999999 0.7188844999999999 0.7188844999999999