condition mean min max ZT0-3 0.0456873 0.0 0.0913746 ZT4-7 0.0299945 0.0299945 0.0299945 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.11963145 0.11963145 0.11963145 ZT20-23 0.0302145 0.0302145 0.0302145