condition mean min max ZT0-3 0.0222977405 0.0 0.044595481 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0725787685 0.0 0.145157537 ZT12-15 0.268907574 0.18559105399999998 0.352224094 ZT16-19 0.25729070600000004 0.2443845495 0.2701968625 ZT20-23 0.41011708675 0.3494622905 0.470771883