Ecotect weather file

Hello,

Can somebody please look at this and help me:

    -   to create a conditional statement, that would make the 5-8(these including) months not change the behaviour of my geometry.

At the moment the elements of the designed surface move and change according to 12 months (the sun path is imported from ecotect). But I would like my geometry to stay stable during 5-8 months, not change at all.

Can somebody point me to the right direction of creation such a condition?

Your help would be much appreciated! :)

Thank you!

J