condition mean min max ZT0-3 1.369005 1.369005 1.369005 ZT4-7 0.6276364999999999 0.6276364999999999 0.6276364999999999 ZT8-11 0.219209 0.219209 0.219209 ZT12-15 1.0536975 1.0536975 1.0536975 ZT16-19 5.342185 5.342185 5.342185 ZT20-23 2.8129999999999997 2.8129999999999997 2.8129999999999997