condition mean min max ZT0-3 2794.2 2794.2 2794.2 ZT4-7 1874.9 1874.9 1874.9 ZT8-11 1755.4 1755.4 1755.4 ZT12-15 1740.65 1740.65 1740.65 ZT16-19 2283.5 2283.5 2283.5 ZT20-23 2597.55 2597.55 2597.55