condition mean min max ZT0-3 0.06794016666666666 0.0 0.13588033333333333 ZT4-7 0.0 0.0 0.0 ZT8-11 0.043961 0.043961 0.043961 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0