Facebook targeting method cm , utm6

We think this means
Custom Audience

Why do we think that?

Custom Audiences are a method of targeting Facebook ads that involves the advertiser uploading a list of people or email addresses they wish to reach with their ads. Facebook matches these against Facebook users who form the “Custom Audience” for the ad.

Used in 239,588 adverts with a spend of $39,147,711

Count Spend

No values for time period.