condition mean min max ZT0-3 0.8809166666666667 0.0 2.64275 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 2.540025 2.540025 2.540025 ZT20-23 0.0 0.0 0.0