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 0.2638 0.0 0.5276 ZT16-19 0.985105 0.985105 0.985105 ZT20-23 0.55587 0.55587 0.55587