condition mean min max ZT0-3 0.008331024 0.0 0.016662048 ZT4-7 0.0 0.0 0.0 ZT8-11 0.036357812 0.01848094 0.054234684000000005 ZT12-15 0.03832482649999999 0.013492467 0.06315718599999999 ZT16-19 0.017826371 0.0 0.035652742 ZT20-23 0.032642082 0.0 0.065284164