Retrieve values from rows where monthly max occurs.

heberpower can you throw sample data in a pbix file and expected output, will get back to you with the solution.

Hi heberpower 

I think you want to show the max Hour per month.

You can try to build a matrix visual and use a measure filter in this visual.

My Sample:

Measure:

Measure = 
VAR _MaxHourPerMonth = MAXX(FILTER(ALL('Table'),'Table'[Year]=MAX('Table'[Year])&&'Table'[Month]=MAX('Table'[Month])),'Table'[Hour])
VAR _MaxDate = CALCULATE(MAX('Table'[Date]),FILTER(ALL('Table'),'Table'[Year]=MAX('Table'[Year])&&'Table'[Month]=MAX('Table'[Month])&&'Table'[Hour]=_MaxHourPerMonth))
RETURN
IF(MAX('Table'[Date])=_MaxDate,1,0)

Result is as below.

Set the measure to show items when the value is 1.

Best Regards,

Rico Zhou

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly. 

Hi heberpower 

Could you tell me if your problem has been solved? If it is, kindly Accept it as the solution. More people will benefit from it. Or you are still confused about it, please provide me with more details about your table and your problem or share me with your pbix file from your Onedrive for Business.

Best Regards,

Rico Zhou