condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 1.158959 1.158959 1.158959 ZT16-19 0.305027 0.305027 0.305027 ZT20-23 0.0609665 0.0609665 0.0609665