Agencies also differ in their reporting.
Some adjustments to the original OMB-provided data were made during February and March 1999, to reflect agency revisions, AAAS conversations with agency budget officials, supplemental appropriations, emergency spending, and rescissions. When these other data sources are used, they are noted in tables and charts. The reader is advised to examine carefully the footnotes of the tables in this report. Each function often includes programs from multiple agencies.