condition mean min max ZT0-3 0.7771499999999999 0.0 1.5542999999999998 ZT4-7 1.01281 1.01281 1.01281 ZT8-11 0.0 0.0 0.0 ZT12-15 0.20840999999999998 0.0 0.41681999999999997 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0