condition mean min max ZT0-3 0.0178917 0.01682525 0.0188898 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0096029 0.0 0.0192058 ZT16-19 0.0167829 0.0167829 0.0167829 ZT20-23 0.03650005 0.03650005 0.03650005