; and (II) an explanation for that notation; (iii) identify any gaps in product emissions intensity data for covered products or categories of covered products produced in the United States; and (iv) coordinate with the United States Trade Representative to assess the feasibility of implementing, within existing authority, a requirement for importers to provide data to fill any gaps in product emissions intensity data for covered products or categories of covered products imported into the United States. (B) Requirement For each instance noted under subparagraph (A)(i), the Secretary shall estimate with reasonable accuracy the average product emissions intensity of the next highest aggregation of categories of covered products for which data are available. (C) Considerations In determining whether there are sufficient data to estimate with reasonable accuracy the average product emissions intensity of a covered product or category of covered products under subparagraph (A)(i), the Secretary shall consider the following factors: (i) The public availability of statistics on greenhouse gas emissions for particular industries from government sources and international organizations. (ii) The public availability of data on the quantity and source of inputs, such as electricity, consumed by particular industries. (iii) The extent to which the data described in clauses (i) and (ii) cover a representative group of producers within an industry. (iv) The transparency in the method used to collect, analyze, summarize, and publish the data described in clauses (i) and (ii). (v) Whether there are other factors that may impact the accuracy of the data used. (vi) The recency of the data used. (c) Public database The Secretary shall establish a public online database, or leverage an existing public online database, for— (1) the average product emissions intensity data collected under subparagraphs (A) and (C) of subsection (b)(1)