The Basic Custom Report allows you to choose from any of the following Dimensions and Metrics to create a detailed customized report that meets your needs.
Dimensions:

• Date
• Advertiser
• Line
• Creative ID
• Creative Size
• Region/Date
• DMA
• Zip Code
• Exchange
• Browser
• Operating System
• Site Domain
• App
• Device Type 
• Device MAke
• Device Model 
• Carrier
• Deal ID
• App ID
• App Name

Metrics:

• Impressions 
• Clicks
• Post-Click Conversions
• Post-View Conversions
• Spend
• View Measured Impressions
• View Confirmed Impressions

If Region/State is selected for countries outside of the United States, the report will return a numerical code that corresponds to the Region/State. Use this Region Mapping doc to map the numerical code to the Region/State where the impression was served: Region Mapping