Zend certified PHP/Magento developer

How can make my formula reference a specific column based on the header

I currently have a table that presents different transactions by year and month, as per the example below.

I want to be able to count how many transactions were over 10, but only for the month and year that I selected, as per cell B1 and B2. In that example, I have selected 2019 and March, which should return 1. As there was 1 transaction in March 2019 that exceeded 10.

A B C D E F G H
1 Year: 2019 Month 2020 2019 2018 Over 10?
2 Month: Mar Jan 10 5 15 0
3 Jan 20 20 10 0
4 Feb 10 25 25 0
5 Feb 5 30 10 0
6 Mar 20 15 5 1
7 Mar 25 5 20 0

To do that, I created a helper column on the side, in column H. My goal is to obtain the values you see in this column.

So far, to obtain the correct month, I have written the following formula:

=IF(AND(ROW(D2)>=MATCH($B$2,D:D,0),$F2>10),1,0)

However, instead of directly referring to column F for 2019, I want to have the formula refer to cell B1. So that if I change the value in B1 to 2020, then it would apply the formula to column E.

Does anyone know how I can amend that part of the formula to achieve this?