condition mean min max ZT0-3 2298.3 2298.3 2298.3 ZT4-7 1582.4 1582.4 1582.4 ZT8-11 1435.15 1435.15 1435.15 ZT12-15 1368.5500000000002 1368.5500000000002 1368.5500000000002 ZT16-19 2067.6 2067.6 2067.6 ZT20-23 2351.3 2351.3 2351.3