The SDO EVE ESP Level 1 data files are created by the Laboratory for Atmospheric and Space Physics in Boulder, Colorado for the NASA Solar Dynamics Observatory (SDO) Extreme Ultraviolet Variability Experiment (EVE). The Science Processing and Operations Center (SPOC) is responsible for creating and maintaining access to all EVE products. ESP Level 1 data products are generated using software and algorithms created at the Univ. of Southern California Space Sciences Center in Los Angeles, CA. For a high-level introduction to the EVE instrumentation, please visit the following website: https://lasp.colorado.edu/home/eve/science/instrument/.
These Level 1 products are defined to contain 4-Hz integrations from the Extreme ultraviolet SpectroPhotometer (ESP) and began in 2010 day 120 and are continuing. This version change includes updated long-term degradation corrections. This release of EVE ESP Level 1 data products replaces all previous versions.