How should ATC relay a pilot report of runway braking action under the current Global Reporting Format?

1. Relay the aircraft type, time if relevant, runway portion, and the reported standardized braking-action term; do not convert the report into an invented friction coefficient.
2. Convert every pilot report into a precise Mu value and issue it as a measured fact.
3. Replace the runway condition report with the airline's internal performance calculation.
4. Suppress all reports that differ from the airport assessment.