condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.022022333333333335 0.0 0.04404466666666667 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0