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Data Sources for Neptune Temperature Analysis

InstrumentObservatoryData typeObservation years
TEXES (Texas Echelon Cross Echelle Spectrograph)Gemini Observatoryspectroscopy2007, 2019
T-ReCS (Thermal-Region Camera Spectrograph)Gemini Observatoryinfrared imaging2007, 2010
LWS (Long Wavelength Spectrometer)Keck Observatoryinfrared imaging2003
VISIR (VLT Imager and Spectrometer for mid-InfraRed)European Southern Observatoryspectroscopy2006

Julianne I. Moses and colleagues have reported that Neptune may have cooled significantly between 2003 and 2020. The team reached this conclusion by analyzing existing infrared imaging and spectroscopy data about the planet obtained from various instruments in different years. Of the team’s sources listed in the table, the earliest example of spectroscopy data included in the analysis was obtained in blank

Which choice most effectively uses data from the table to complete the text?