condition mean min max ZT0-3 0.125865 0.0 0.25173 ZT4-7 0.77052 0.77052 0.77052 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.495127 0.495127 0.495127 ZT20-23 0.500695 0.500695 0.500695