condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.038082011666666665 0.0 0.07616402333333333 ZT8-11 0.0289753255 0.0 0.057950651 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0