Dataset Open Access

Samples of solar flares classes, active regions and time of occurrence

Gradvohl, André Leon Sampaio; Fernandes, Matheus Evers Rodrigues

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<oai_dc:dc xmlns:dc="" xmlns:oai_dc="" xmlns:xsi="" xsi:schemaLocation="">
  <dc:creator>Gradvohl, André Leon Sampaio</dc:creator>
  <dc:creator>Fernandes, Matheus Evers Rodrigues</dc:creator>
  <dc:description>This dataset contains samples of solar flares measurements of classes X, M, C and B.

For clarification, the flares are classified as follows:

	Class X: flares \(&gt;10^{-4} watts/m^{2}\)
	Class M: \(10^{-5} watts/m^{2} &lt;\)flares \(&lt;10^{-4} watts/m^{2}\)
	Class C: \(10^{-6} watts/m^{2}&lt;\)flares\(&lt;10^{-5} watts/m^{2}\)
	Class B: \(10^{-7} watts/m^{2}&lt;\)flares\(&lt;10^{-6} watts/m^{2}\)

This dataset was assembled with data from

The date (yyyy-mm-dd hh:mm:ss) the authors assembled the data is 2017-11-14 13:48:37

The original data source is the National Oceanic &amp; Atmospheric Administration (NOAA), U.S. Departement of Commerce.

Data description:

	Class: Class of the flare: X, M, C or B
	Date: Date of occurence in yyyy-mm-dd format.
	AR: Active Region ID attributed by NOAA.
	Begin: time the flare begins in hh:mm:ss format.
	Max: time the flare reaches its max value in hh:mm:ss format.
	End: time the flare vanishes in hh:mm:ss format.

The dataset has 2,256 tuples divided as follows:

	171 tuples with X class flares data (7.58%).
	572 tuples with M class flares data (25.35%).
	767 tuples with C class flares data (34%).
	746 tuples with B class flares data (33.07%).

The data collected refer to the period between August 25, 1996 and May 29, 2017.</dc:description>
  <dc:subject>Space Weather</dc:subject>
  <dc:subject>Solar Flares</dc:subject>
  <dc:title>Samples of solar flares classes, active regions and time of occurrence</dc:title>
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