condition mean min max ZT0-3 314.0 314.0 314.0 ZT4-7 338.5 338.5 338.5 ZT8-11 367.1 367.1 367.1 ZT12-15 467.65 467.65 467.65 ZT16-19 457.45000000000005 457.45000000000005 457.45000000000005 ZT20-23 393.15000000000003 393.15000000000003 393.15000000000003