condition mean min max ZT0-3 0.22453433333333334 0.0 0.4525055 ZT4-7 0.4320405 0.4320405 0.4320405 ZT8-11 0.0 0.0 0.0 ZT12-15 0.11350075 0.0 0.2270015 ZT16-19 0.632643 0.632643 0.632643 ZT20-23 0.4726775 0.4726775 0.4726775