condition mean min max ZT0-3 0.018114349999999998 0.0 0.0392545 ZT4-7 0.01317375 0.01317375 0.01317375 ZT8-11 0.0138794 0.0138794 0.0138794 ZT12-15 0.0495284 0.0310139 0.0680429 ZT16-19 0.06556239999999999 0.06556239999999999 0.06556239999999999 ZT20-23 0.04983625 0.04983625 0.04983625