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 0.12873583333333333 0.0 0.25747166666666665 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0