LOCALIZED BRAIN ACTIVATION RELATED TO THE STRENGTH OF AUDITORY LEARNING IN A PARROT.





Derivation of a planetary ionospheric storm index

The planetary ionospheric storm index, Wp, is deduced from the numerical global ionospheric GPS-IONEX maps of the vertical total electron content, TEC, for more than half a solar cycle, 1999–2008.The TEC values are extracted from the 600 grid points of the map at latitudes 60° N to 60° S with a step of 5° and longitudes 0° to

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