condition mean min max ZT0-3 0.015314 0.0 0.030628 ZT4-7 0.0 0.0 0.0 ZT8-11 0.1567927 0.1567927 0.1567927 ZT12-15 0 0 0 ZT16-19 0.150648 0.150648 0.150648 ZT20-23 0.0 0.0 0.0