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EISN - SIDC The estimated international sunspot number (EISN) is a daily value obtained by a simple average over available sunspot counts from prompt stations in the SILSO network
European Influenza Surveillance Network (EISN) On an operational level, EISN consists of operational contact points for influenza epidemiology and virology These are nominated by the national public health authority in each EU Member State, Iceland and Norway
Eisn | Memory Beta, non-canon Star Trek Wiki | Fandom Eisn (also known as Ket-cheleb or Stelam Rom'lnz or 128 Trianguli) was a spectral class G9 white star, primary of the Romulan system The Federation name for the star was Romulus
Estimated International Sunspot Number - The DXZone The estimated international sunspot number (EISN) is a daily value obtained by a simple average over available sunspot counts from prompt stations in the SILSO network
SILSO - SIDC The Sun has been very active during the last few months Since April 2024, many large and complex sunspot groups have adorned the solar disk driving the daily sunspot number regularly to well above 250 (see the SIDC USET image for 7 August 2024 underneath)