condition mean min max ZT0-3 1332.2 1332.2 1332.2 ZT4-7 2464.8 2464.8 2464.8 ZT8-11 2390.25 2390.25 2390.25 ZT12-15 2118.3 2118.3 2118.3 ZT16-19 1347.65 1347.65 1347.65 ZT20-23 1188.5 1188.5 1188.5