condition mean min max ZT0-3 0.15340093425 0.08313374850000001 0.22366812 ZT4-7 0.1389729045 0.09342303099999999 0.184522778 ZT8-11 0.41341877375 0.40824844800000004 0.4185890995 ZT12-15 0.35004172875 0.1944450215 0.505638436 ZT16-19 0.31332375325000006 0.302568965 0.32407854150000004 ZT20-23 1.1677099855 0.39337985599999997 1.9420401149999997