condition mean min max ZT0-3 5762.8 5762.8 5762.8 ZT4-7 4180.3 4180.3 4180.3 ZT8-11 4980.75 4980.75 4980.75 ZT12-15 4676.65 4676.65 4676.65 ZT16-19 4386.65 4386.65 4386.65 ZT20-23 4959.5 4959.5 4959.5