condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 4.85912 4.85912 4.85912 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 4.59636 4.59636 4.59636 ZT20-23 0.0 0.0 0.0