An anomaly graph is a type of chart or visual representation that shows unusual or abnormal patterns or occurrences in data. It helps to identify points in the data that deviate significantly from the expected or normal behavior. Full definition
I assume the Cryosphere Today anomaly graph is also 15 % extent. (wattsupwiththat.com)
Earlier threads have crawled over this issue, and it is amazing that slow learners are still reading anomaly graphs as temperature graphs. (johnquiggin.com)
Ken Gregory's spreadsheet had the data to reproduce the global average IR absorption anomaly graph in slide 16 in the AGU presentation. (scienceofdoom.com)