condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.14503816666666666 0.0 0.2900763333333333 ZT16-19 0.469603 0.469603 0.469603 ZT20-23 0.0 0.0 0.0