condition mean min max ZT0-3 0.12544783333333334 0.0 0.3763435 ZT4-7 0.1995535 0.1995535 0.1995535 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0