Source is graded on a scale of A to F, information on a scale of 1 to 5.
Thus:
- A Completely trustworthy source
- B Usually trustworthy source
- C Possibly trustworthy source
- D Source not to be trusted
- E Trustworthiness cannot be judged
- 1 Information confirmed by other sources
- 2 Probably reliable information
- 3 Possibly reliable information
- 4 Unreliable information
- 5 Reliability cannot be judged