:Issued: 2026 May 01 08:35 UTC :Product: documentation at http://www.sidc.be/products/ri_hemispheric #--------------------------------------------------------------------# # MONTHLY TABLE OF THE TOTAL AND HEMISPHERIC SUNSPOT NUMBERS # # from the World Data Center SILSO # #--------------------------------------------------------------------# APRIL 2026 PROVISIONAL INTERNATIONAL NORMALIZED HEMISPHERIC SUNSPOT NUMBERS Date Sn Sn(N) Sn(S) __________________________________________________________________ 1 129 95 34 2 133 97 36 3 120 82 38 4 106 80 26 5 89 70 19 6 97 72 25 7 89 69 20 8 70 48 22 9 59 36 23 10 28 17 11 11 39 27 12 12 38 23 15 13 53 30 23 14 53 32 21 15 49 37 12 16 50 39 11 17 48 37 11 18 41 30 11 19 36 25 11 20 37 26 11 21 50 39 11 22 71 56 15 23 68 54 14 24 94 64 30 25 114 79 35 26 115 75 40 27 117 81 36 28 128 81 47 29 123 78 45 30 135 80 55 __________________________________________________________________ MONTHLY MEAN : 79.3 55.3 24.0 COOPERATING STATIONS : 68 59 59 PILOT STATION : Specola Solare Ticinese, Locarno __________________________________________________________________ Reproduction permitted if source mentionned #--------------------------------------------------------------------# # World Data Center SILSO # # Sunspot Index and Long-term Solar Observations # # Royal Observatory of Belgium # # Tel.: ../32/(0)2/373 02 33 Fax : ../32/(0)2/374 98 22 # # Please do not reply directly to this message # # For more information, contact: silso.info@oma.be # # or visit first our Web site at: http://www.sidc.be/silso # # To unsubscribe, visit http://sidc.be/registration/unsub.php # #--------------------------------------------------------------------# ---------------------------------------------------------------------- | Legal notices: | | - Intellectual Property Rights: | | http://www.astro.oma.be/common/internet/en/data-policy-en.pdf | | - Liability Disclaimer: | | http://www.astro.oma.be/common/internet/en/disclaimer-en.pdf | | - Use and processing of your personal information: | | http://www.astro.oma.be/common/internet/en/privacy-policy-en.pdf | ----------------------------------------------------------------------