Key takeaways
- Use comparable product and delivery definitions across observations.
- Distinguish indications, accepted terms and invoiced transactions.
- Identify the period covered by public port information.
- Show missing or stale evidence rather than manufacturing a current value.
Check what the local public source actually measures
PPA's statistics page includes explicitly historical statistical collections, including a collection labelled 2010–13.
That publication context should remain visible when using port information in a monitoring note. A historical port series is not a current bunker quotation, and a page available today does not make every linked dataset current.
Do not infer fuel availability, supplier prices or delivery windows from a general port-activity series.
Define the observation before collecting it
State the product specification or clearly identified market category, relevant delivery location and quantity basis. Record the currency, time of observation and source permissions.
Preserve the commercial status. An indicative response may be useful context, but it should not be merged with an accepted transaction as though both establish the same thing.
Identify the inclusions and exclusions. A product-only indication and a response including delivery or attendance can move differently without describing a change in the same underlying price basis.
If the source does not provide enough detail to make the observation comparable, retain it separately or mark the limitation. Avoid forcing every available number into the main series.
Use a comparable-observation register
| Field | Why it belongs with the observation |
|---|---|
| Source and permission | Establishes where the information came from and how it may be used |
| Product definition | Prevents unlike fuels or specifications from being merged |
| Supply scope | Preserves location, quantity and included-service assumptions |
| Timestamp and validity | Separates observation age from the terms' actual applicability |
| Commercial status | Distinguishes indication, acceptance and invoice evidence |
| Change explanation | Identifies a revised basis or an actual like-for-like movement |
| Missing qualification | Shows why an observation cannot support a stronger conclusion |
This is an original monitoring framework. It does not define a Piraeus benchmark or promise that comparable public quotations are available.
Maintain a current, permission-aware data field
Permitted market-observation record: not provided; obtain current verified information. For a current transaction, .
Populate the field only from sources authorised for the intended use. Where no suitable current observation exists, record unavailable and explain the missing basis. Do not replace it with a remembered value or a fictional example from another article.
Keep source time and collection time distinct. A newly received message can reproduce an older indication. The reader should be able to see the age of the underlying information, not just the latest forwarding date.
Fictional case: a changed inclusion looks like a market fall
A fictional analyst records a Piraeus response that includes a delivery component. A later response appears lower but covers only the product amount. The weekly note describes the difference as a decline in the local market.
During review, the analyst compares the original scope and recognises that the observations are not on the same basis. The newer response remains useful, but it cannot support the claimed like-for-like movement until the missing component is clarified.
The corrected note labels the scope difference and requests comparable evidence. It retains both source records rather than adjusting one silently to preserve a smooth-looking series.
The fictional case supplies no actual Piraeus price movement or current market value.
Separate observation from explanation
Even a comparable price change does not establish its cause. The analyst may have hypotheses about supply, timing or demand, but those explanations require their own evidence.
Label the hypothesis and identify what would help assess it. A local activity report can provide context without proving that it caused a particular supplier's commercial response.
Avoid converting a small set of transaction-specific observations into a universal statement about every buyer or vessel. Describe the population and limits of the evidence used in the note.
Review freshness when the case changes
An observation can become unsuitable because the proposed product, quantity or delivery arrangement changes, even if the source is recent. Relevance and age should both be reviewed before commercial reliance.
Preserve the source's stated validity and conditions. Do not impose an invented universal expiry period or imply that an indication remains firm simply because it appears in the latest report.
If a current decision needs firmer evidence, request a scoped response through the authorised commercial channel. Monitoring supports an enquiry; it does not replace the actual procurement process.
Write a useful monitoring conclusion
State what comparable evidence was observed, what changed in its basis and what remains unavailable. Connect the conclusion to a practical next step, such as refreshing a quotation for the intended call.
Retain corrections explaining why a reported movement was reclassified as a scope difference.
Preserve limitations when the note is copied into a decision discussion. Keep its headline supported by the register.
Common mistakes
Avoid treating historical port data as current fuel pricing, merging indications with transactions or dropping delivery inclusions from the comparison. Do not use a recent forwarding date as the age of the original observation.
Keep the evidence and the proposed explanation distinct.
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Educational information only; not legal, financial or trading advice. Contract wording and applicable rules control. Verify current requirements and obtain qualified advice before acting.
Frequently asked questions
Does the PPA statistics page provide a live bunker benchmark?
Use the page for the scope and periods it actually publishes. It should not substitute for current, authorised fuel-market observations.
Can unlike quotations remain in the register?
Yes, if their differences are clearly recorded. Keep them out of a like-for-like comparison until the relevant scope is reconciled.
What should appear when current evidence is unavailable?
State unavailable and identify the missing information. Do not invent a value to keep a chart or report complete-looking.
Does a monitoring note replace a purchase enquiry?
No. A procurement decision needs a response scoped to the actual vessel, product, quantity, location and timing, with the relevant review and acceptance.