condition mean min max ZT0-3 2.8995 0.0 5.799 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 2.85383 2.85383 2.85383 ZT20-23 0.0 0.0 0.0