condition mean min max ZT0-3 0.859153 0.859153 0.859153 ZT4-7 0.7044155000000001 0.7044155000000001 0.7044155000000001 ZT8-11 0.57499 0.57499 0.57499 ZT12-15 0.5548584999999999 0.5548584999999999 0.5548584999999999 ZT16-19 0.6893093333333333 0.6893093333333333 0.6893093333333333 ZT20-23 0.792079 0.792079 0.792079