condition mean min max ZT0-3 0.30954365 0.2825533 0.336534 ZT4-7 0.0473523 0.0473523 0.0473523 ZT8-11 0.28784 0.28784 0.28784 ZT12-15 0 0 0 ZT16-19 0.7093975 0.7093975 0.7093975 ZT20-23 0.3815965 0.3815965 0.3815965