condition mean min max ZT0-3 105.905862 105.905862 105.905862 ZT4-7 98.479609 98.479609 98.479609 ZT8-11 101.274172 101.274172 101.274172 ZT12-15 108.8854245 108.8854245 108.8854245 ZT16-19 126.028043 126.028043 126.028043 ZT20-23 130.700137 130.700137 130.700137