condition mean min max ZT0-3 0.36441999999999997 0.36441999999999997 0.36441999999999997 ZT4-7 0.742065 0.742065 0.742065 ZT8-11 0.54456 0.54456 0.54456 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0