Data Access
The EUV Grating Spectrograph (EGS) aboard SEE performs measurements of the Sun for about 3 minutes every orbit (97 minutes) which usually gives 14-15 measurements per day. The Level 2A data is time averaged over each measurement, after being 1-AU corrected and removing flares. The 1-AU correction is provided.
Version:2.2.2
The EUV Grating Spectrograph (EGS) aboard SEE performs measurements of the Sun for about 3 minutes every orbit (97 minutes) which usually gives 14-15 measurements per day. The Level 2A data is time averaged over each measurement, after being 1-AU corrected and removing flares. The 1-AU correction is provided.
| Role | Person | StartDate | StopDate | Note | |
|---|---|---|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/Thomas.N.Woods |
This web page allows the request of data files for this product. To request data: for the EGS_2A data type of interest, click the year of interest to go the the ftp directory of files and download the desired day-long file by clicking on it.
Date of observations
Dimensions: [Number_of_observations] - where Number_of_observations is the number of observations in the file.
Array of wavelength intervals, half-Angstrom centers
Dimensions: [Number_of_observations, Number_of_wavelength_intervals] - where Number_of_observations is the number of observations in the file, and Number_of_wavelength_intervals is the number of wavelength intervals.
Array of median solar irradiances for each wavelength interval. This is the spectrum.
Dimensions: [Number_of_observations, Number_of_wavelength_intervals] - where Number_of_observations is the number of observations in the file, and Number_of_wavelength_intervals is the number of wavelength intervals.
Array of differences between the median and weighted averaged solar irradiances for each wavelength interval
Dimensions: [Number_of_observations, Number_of_wavelength_intervals] - where Number_of_observations is the number of observations in the file, and Number_of_wavelength_intervals is the number of wavelength intervals.
Accuracy of solar irradiance
Dimensions: [Number_of_observations, Number_of_wavelength_intervals] - where Number_of_observations is the number of observations in the file, and Number_of_wavelength_intervals is the number of wavelength intervals.
Measurement precision
Dimensions: [Number_of_observations, Number_of_wavelength_intervals] - where Number_of_observations is the number of observations in the file, and Number_of_wavelength_intervals is the number of wavelength intervals.
Standard deviation of the median
Dimensions: [Number_of_observations, Number_of_wavelength_intervals] - where Number_of_observations is the number of observations in the file, and Number_of_wavelength_intervals is the number of wavelength intervals.
Array of the Number of points (1-Angstrom-gridded measurements) used in determining the observation average for each wavelength interval
Dimensions: [Number_of_observations, Number_of_wavelength_intervals] - where Number_of_observations is the number of observations in the file, and Number_of_wavelength_intervals is the number of wavelength intervals.
Order Sorting correction applied to flux_median
Dimensions: [Number_of_observations, Number_of_wavelength_intervals] - where Number_of_observations is the number of observations in the file, and Number_of_wavelength_intervals is the number of wavelength intervals.
AU correction factor for date
Dimensions: [Number_of_observations] - where Number_of_observations is the number of observations in the file.
0 is calibration slit, 1 is normal slit
Dimensions: [Number_of_observations] - where Number_of_observations is the number of observations in the file.
Array of observation start times
Dimensions: [Number_of_observations] - where Number_of_observations is the number of observations in the file.
Array of observation stop times
Dimensions: [Number_of_observations] - where Number_of_observations is the number of observations in the file.
Array of observation identifiers (1-254), A value of 0 means the observation did not produce data used in routine products.
Dimensions: [Number_of_observations] - where Number_of_observations is the number of observations in the file.
Ratio of observation flux_median to daily flux_median
Dimensions: [Number_of_observations] - where Number_of_observations is the number of observations in the file.