condition mean min max ZT0-3 0.20335716666666667 0.0 0.340899 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.14873875 0.0 0.2974775 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0