condition mean min max ZT0-3 0.019345291666666667 0.019345291666666667 0.019345291666666667 ZT4-7 0.0 0.0 0.0 ZT8-11 0.006861824999999999 0.006861824999999999 0.006861824999999999 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0