Buckling Calculation and Effective Length

Hi,

I have a 3 fixed-base SHS profile-columns (5m length) with the following K parameters (EN):

Highlighted red above: KZ=2.1

KY=2.3 for above red-highlighted columns

KY=2.1 for above red-highlighted column

Here are their beam numbers:

Now, I am confused as to why the buckling calculation (effective length) results in the STAAD Output Viewer resulted to below:

Did I input the K values wrong?

Please advise.

Thank you.