condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.23737904433333334 0.08895869566666666 0.38579939300000005 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0