condition mean min max ZT0-3 0.09529233333333334 0.032916 0.1768605 ZT4-7 0.0333858 0.0333858 0.0333858 ZT8-11 0.0339332 0.0339332 0.0339332 ZT12-15 0.03566695 0.0338274 0.0375065 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0