What are the numbers in a .NET stack trace on an ASPX error page?

Question

What are the numbers in a .NET stack trace on an ASPX error page (see picture)? They don't seem to be line numbers as they are too large? How can those numbers help me in determining the line of code that threw the exception?

Answer 1

EDIT: As this has been marked correct, I might as well edit it to make it so :)

They're offsets within the JITted native code of the method. Unfortunately that means they don't help very much when trying to work out what's going on. See this blog post for a more detailed example.