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:2.7.1
Version:2.7.1
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 |
The HelioData dataset page provides an overview of the dataset with access links, associated variables, and more.
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.