condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 1.2899209336666668 0.0 2.5798418673333336 ZT12-15 0.31557903116666663 0.0 0.6311580623333333 ZT16-19 0.0378365725 0.0 0.075673145 ZT20-23 0.0 0.0 0.0