Why are figures estimated?
worldsteel.org collects and reports figures provided by direct sources. Occasionally, the reported figures are not yet final figures, or there is a delay in reporting. As worldsteel publishes monthly data on the 20th of each month, any unverified figures are marked as estimates. Estimated figures are updated in the following month. If no updated figure is provided, the estimated figure remains. If there are many estimates, or if a major steel-producing company delays the release of its figures, worldsteel may wait a day or two before issuing the monthly statistics.