condition mean min max ZT0-3 0.17896050000000002 0.0 0.35792100000000004 ZT4-7 0.36323150000000004 0.36323150000000004 0.36323150000000004 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.1786395 0.1786395 0.1786395 ZT20-23 0.358372 0.358372 0.358372