condition mean min max ZT0-3 0.07282383333333334 0.0 0.1455615 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.11383025 0.0814655 0.146195 ZT16-19 0.0699515 0.0699515 0.0699515 ZT20-23 0.0 0.0 0.0