Platts Jet Fuel Price Index is calculated by S&P Global Platts using that organization's proprietary daily assessments for Jet Fuel spot prices in the relevant regional centers. When a market is not assessed on a particular day, for instance because of a market holiday, the previous working day's spot assessment is used.
Each of the individual Platts assessments is given a weighting by Platts in the regional baskets, based primarily on uplift data and trading volume; in a similar way, each of the regional indices is given a weighting in the Global Composite Index (specified in the column "Share in Composite Index").
These values are compared with average spot prices in 2000, similarly weighted by uplift during that period, to generate a percentage figure reflecting the overall rise in markets compared to the base period. As an example, an index value of 200 reflects a doubling of price since the year 2000.
Please note that all aspects of the Jet Fuel Price Index methodology and data, including the underlying data, are the intellectual property of S&P Global Platts, a division of the McGraw-Hill Companies.