condition mean min max ZT0-3 2243.2 2243.2 2243.2 ZT4-7 2096.9 2096.9 2096.9 ZT8-11 1862.9 1862.9 1862.9 ZT12-15 1637.45 1637.45 1637.45 ZT16-19 1656.45 1656.45 1656.45 ZT20-23 2059.2 2059.2 2059.2