condition mean min max ZT0-3 121.14175 117.4025 124.881 ZT4-7 72.86500000000001 72.86500000000001 72.86500000000001 ZT8-11 19.51645 19.51645 19.51645 ZT12-15 0 0 0 ZT16-19 46.33 46.33 46.33 ZT20-23 78.9319 78.9319 78.9319