condition mean min max ZT0-3 2.6925925 1.584295 3.80089 ZT4-7 0.304295 0.304295 0.304295 ZT8-11 3.782525e-05 3.782525e-05 3.782525e-05 ZT12-15 0 0 0 ZT16-19 0.133567 0.133567 0.133567 ZT20-23 1.453805 1.453805 1.453805