condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.04170525 0.04170525 0.04170525 ZT12-15 0.023136275 0.0 0.04627255 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0