condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.00699155 0.0 0.0139831 ZT16-19 0.01388745 0.01388745 0.01388745 ZT20-23 0.0 0.0 0.0