condition mean min max ZT0-3 0.05143421325 0.0 0.1028684265 ZT4-7 0.042543858500000004 0.0 0.08508771700000001 ZT8-11 0.02880864675 0.0 0.0576172935 ZT12-15 0.6476107465000001 0.311729249 0.983492244 ZT16-19 1.33956993475 1.22797244 1.4511674294999999 ZT20-23 2.9738729367499994 2.4305522139999995 3.5171936594999997