Platts assessments are based on market information, including, but not limited to, firm bids and offers, and trades reported to the editor up to the close of business (4.30 pm Singapore time).

All the information used to inform the assessment is published transparently on Platts' platforms as "heards". An assessment rationale is published explaining what the assessments are and how they have been reached.

A daily market commentary accompanies the price assessments and rationale, which highlights the most important trends that have affected the markets that day and provides insight into what the market expects over the coming weeks.