condition mean min max ZT0-3 1581.25 1581.25 1581.25 ZT4-7 1756.7 1756.7 1756.7 ZT8-11 1347.3 1347.3 1347.3 ZT12-15 1312.05 1312.05 1312.05 ZT16-19 1312.25 1312.25 1312.25 ZT20-23 1298.15 1298.15 1298.15