condition mean min max ZT0-3 0.01598506666666667 0.0 0.0479552 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.022560375 0.0 0.04512075 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0