condition mean min max ZT0-3 2095.35 2095.35 2095.35 ZT4-7 1617.3 1617.3 1617.3 ZT8-11 1579.75 1579.75 1579.75 ZT12-15 1785.45 1785.45 1785.45 ZT16-19 2351.5 2351.5 2351.5 ZT20-23 2367.15 2367.15 2367.15