condition mean min max ZT0-3 11.01005 11.01005 11.01005 ZT4-7 10.266645 10.266645 10.266645 ZT8-11 12.16005 12.16005 12.16005 ZT12-15 11.7417 11.7417 11.7417 ZT16-19 11.33485 11.33485 11.33485 ZT20-23 10.979849999999999 10.979849999999999 10.979849999999999