condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.215088 0.215088 0.215088 ZT8-11 0.131911 0.131911 0.131911 ZT12-15 0 0 0 ZT16-19 0.3150805 0.3150805 0.3150805 ZT20-23 0.04821305 0.04821305 0.04821305