Mode on multiple groups

Dear Experts,

Is it possible to calculate the mode for multiple groups.

In the document, in kolom H i have all the month numbers lined up. In kolom I, I want to see the mode of Kolom E per month.
This means that I want to know per month, which # days in stock is the most occuring.

I tried to explain this as good as possible. Please tell me if you don't understand my question.

Many thanks.

--- EDIT---

For some reason I can't seem to upload the attachment:

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