condition mean min max ZT0-3 0.03176225 0.0 0.0635245 ZT4-7 0.0648135 0.0648135 0.0648135 ZT8-11 0.1258645 0.1258645 0.1258645 ZT12-15 0 0 0 ZT16-19 0.313599 0.313599 0.313599 ZT20-23 0.0 0.0 0.0