condition mean min max ZT0-3 0.60807465 0.2288473 0.987302 ZT4-7 0.825563 0.825563 0.825563 ZT8-11 1.0994595 1.0994595 1.0994595 ZT12-15 0 0 0 ZT16-19 1.126229 1.126229 1.126229 ZT20-23 1.176145 1.176145 1.176145