condition mean min max ZT0-3 0.0269835 0.0 0.053967 ZT4-7 0.0532085 0.0532085 0.0532085 ZT8-11 0.054935 0.054935 0.054935 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0