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Technical notes

Table Crude petroleum production
Technical note Data exclude natural gas liquids. For some countries, original data expressed in units of capacity or volume have been converted to metric tons by use of the average specific gravities shown in the column headings. Data in thousands of cubic metres can be derived by dividing the figures shown in the table by the appropriate specific gravity. These volume data, in turn, can be converted into thousands of barrels by multiplication by a factor of 6.2898.

Further information may be found in the Energy Statistics Yearbook (Statistical Papers, Series J) United Nations.

Data source United Nations Statistics Division, country responses to the Monthly Bulletin of Statistics questionnaire, supplemented by international and national publications.
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