condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.05297120166666667 0.0 0.10594240333333334 ZT20-23 0.6180366685 0.0 1.236073337