condition mean min max ZT0-3 0.05766366666666667 0.0 0.1121745 ZT4-7 1.9192879999999999 1.9192879999999999 1.9192879999999999 ZT8-11 1.15528 1.15528 1.15528 ZT12-15 0.0002266105 0.0 0.000453221 ZT16-19 1.9409615 1.9409615 1.9409615 ZT20-23 0.0 0.0 0.0