Which data points are commonly captured on a test data sheet?

• A. Weather data only.
• B. Observations describing anomalies and performance notes.
• C. Only numerical readings.
• D. Budget notes.

Answer: (B)

Test data sheets in building commissioning are meant to capture how equipment performed during tests, including both numerical readings and the context that explains those readings. The best fit is observations describing anomalies and performance notes because they document deviations from expected behavior, startup/shutdown issues, alarms, and operating conditions that drove the results. While weather data and numerical values may be recorded, weather data alone doesn't explain performance, and numerical readings without notes can be ambiguous or misleading. Budget notes are unrelated to system performance testing, so they don't belong on a test data sheet. By including observations and performance notes, the data sheet provides a complete, actionable record for verification, troubleshooting, and follow-up.