condition mean min max ZT0-3 0.6150883333333333 0.4019385 0.7327015 ZT4-7 0.48563900000000004 0.48563900000000004 0.48563900000000004 ZT8-11 0.9958184999999999 0.9958184999999999 0.9958184999999999 ZT12-15 1.02248475 0.8274140000000001 1.2175555 ZT16-19 0.43876149999999997 0.43876149999999997 0.43876149999999997 ZT20-23 0.40766100000000005 0.40766100000000005 0.40766100000000005