condition mean min max ZT0-3 56.220143 56.220143 56.220143 ZT4-7 118.656407 118.656407 118.656407 ZT8-11 98.27301449999999 98.27301449999999 98.27301449999999 ZT12-15 95.69788199999999 95.69788199999999 95.69788199999999 ZT16-19 52.684954000000005 52.684954000000005 52.684954000000005 ZT20-23 48.7754615 48.7754615 48.7754615