Dear Colleague, You have received the magnetic activity indices SYM and ASY through WDC C1 for Geomagnetism in Copenhagen. The indices were created by WDC C2 for Geomagnetism, Kyoto. CONTACT PERSON: If you have any questions regarding the data please contact: Dr. Toshihiko Iyemori WDC C2 for Geomagnetism Data Analysis Center for Geomagnetism and Spacemagnetism Faculty of Science Kyoto University Japan E-mail: iyemori@swdcgw.kugi.kyoto-u.ac.jp Fax (or telex): +81 75 722 7884 Phone: Acknowledgement: If the data is used in a publication kindly acknowledge: WDC C2 for Geomagnetism, Kyoto Sincerely yours, Susanne Vennerstroem WDC C1 for Geomagnetism Solar-Terrestrial Physics Division WDC C1 in Copenhagen Lyngbyvej 100 DK-2100 Copenhagen Denmark Fax: +45 39 15 74 60 E-mail: wdcc1@dmi.dk