| Monthly Preliminary Report | ||||||
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MPR |  |
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| Kjell Inge Malde, Director/Editor | Web: | http://www.cv-helios.net | ||||
| Hunsteinstien 42A, N-4083 Hundvaag NORWAY | Email: | cvhelios@gmail.com | ||||
| Volume 44 Number 10 MPR 526 May 2025 (ISSN 2535-3780) | ||||||
| CV-Helios Network | ||||||
| Monthly Preliminary Report for May 2025 | ||||||
| Solar Cycle 25: Month no. 66 | ||||||
| Report id.: cv9008.html - CV-report no.: 526 | ||||||
| Memno. | Name | Country | CV | Obs | K | Obs. Tot. |
| CV-001 | KJELL INGE MALDE | NORWAY | 092 | 26 | - - - | |
| CV-010 | FRANKY DUBOIS | BELGIUM | 078 | 25 | - - - | |
| CV-019 | ELMAR JUNKER | GERMANY | 088 | 10 | - - - | |
| CV-040 | ROBERTO BATTAIOLA | ITALY | 084 | 6 | - - - | |
| CV-068 | SVEN OVE THIMM | DENMARK | 059 | 26 | - - - | |
| CV-077 | ANDREW JOHNSTON | UNITED KINGDOM | 071 | 27 | - - - | |
| CV-080 | JAN JANSSENS | BELGIUM | 067 | 2 | - - - | |
| CV-082 | PIOTR URBANSKI | POLAND | 080 | 28 | - - - | |
| CV-086 | TOS POLAND | POLAND | 083 | 31 | - - - | |
| CV-091 | GRZEGORZ DALEK | POLAND | 081 | 24 | - - - | |
| CV-102 | PAULO ROBERTO MOSER | BRAZIL | 082 | 20 | - - - | |
| CV-103 | OCTAAF STEEN | BELGIUM | 072 | 22 | - - - | |
| CV-105 | ALEXEY RYBACK | RUSSIA | 093 | 20 | - - - | |
| CV-116 | TERJE BJERKGAARD | NORWAY | 075 | 7 | - - - | |
| CV-122 | VLASTISLAV FEIK | CZECH REPUBLIC | 083 | 14 | - - - | |
| CV-135 | GEMA ARAUJO | SPAIN | 103 | 31 | - - - | |
| CV-136 | FAUSTINO GARCIA | SPAIN | 069 | 16 | - - - | |
| CV-139 | JAVIER ALONSO | SPAIN | 086 | 26 | - - - | |
| CV-151 | JEFFREY CARELS | BELGIUM | 072 | 19 | - - - | |
| CV-171 | WALTER JOSE MALUF | BRAZIL | 108 | 28 | - - - | |
| CV-177 | HENDRIK DE BACKER | BELGIUM | 084 | 29 | - - - | |
| CV-181 | ADAM DERDZIKOWSKI | POLAND | 083 | 18 | - - - | |
| CV-198 | DENIS WALLIAN | FRANCE | 081 | 17 | - - - | |
| CV-204 | STEFAN MEISTER | SWITZERLAND | 084 | 6 | - - - | |
| CV-205 | TOM MANGELSDORF | UNITED STATES | 075 | 2 | - - - | |
| CV-207 | ONDREJOV OBSERVATORY (AI CAS) | CZECH REPUBLIC | 104 | 27 | - - - | |
| CV-208 | JOHAN NEYS | BELGIUM | 092 | 14 | - - - | |
| CV-209 | CAIO CRESPO MORAES | BRAZIL | 070 | 3 | - - - | |
| CV-211 | EDWIN DE CEUNINCK | BELGIUM | 061 | 25 | - - - | |
| CV-213 | DIRK LAURENT | BELGIUM | 083 | 21 | - - - | |
| CV-214 | IGOR GRAGEDA MENDEZ | BOLIVIA | 082 | 27 | - - - | |
| CV-215 | ARNAUD MENGUS | FRANCE | 110 | 6 | - - - | |
| CV-219 | KANDILLI OBSERVATORY | TURKEY | 082 | 25 | - - - | |
| CV-220 | MICHEL FRANGEUL | FRANCE | 065 | 13 | - - - | |
| CV-222 | MILENA NIEMCZYK | POLAND | 061 | 4 | - - - | |
| CV-224 | SWO-NOAA (CV-USAF) | UNITED STATES | 085 | 31 | - - - | |
| Totals | Observers | Days | CV | No | K | Obs. tot. |
| 36 | 31 | 81,30 | 676 | 247091,000 | ||
| Results for Results for May 2025 | ||||||
| Date | CV | Obsrvrs | Obs. 6 rot. |
Obsrvrs. 6 rot. |
CV-6 rot. | CV-13 rot. |
| 1 | 70,41 | 27 | 2687 | 16,38 | 73,62 | 84,54 |
| 2 | 65,72 | 25 | 2699 | 16,46 | 73,53 | 84,36 |
| 3 | 67,33 | 24 | 2708 | 16,51 | 73,42 | 84,25 |
| 4 | 84,46 | 24 | 2717 | 16,57 | 73,43 | 84,20 |
| 5 | 100,35 | 20 | 2723 | 16,60 | 73,33 | 84,12 |
| 6 | 112,25 | 20 | 2728 | 16,63 | 73,25 | 84,08 |
| 7 | 107,95 | 21 | 2734 | 16,67 | 73,15 | 84,04 |
| 8 | 108,83 | 24 | 2740 | 16,71 | 73,03 | 84,00 |
| 9 | 100,23 | 22 | 2748 | 16,76 | 72,84 | 83,95 |
| 10 | 82,00 | 24 | 2758 | 16,82 | 72,56 | 83,86 |
| 11 | 57,42 | 26 | 2770 | 16,89 | 72,24 | 83,73 |
| 12 | 45,38 | 26 | 2783 | 16,97 | 71,92 | 83,61 |
| 13 | 57,43 | 28 | 2797 | 17,05 | 71,68 | 83,52 |
| 14 | 42,29 | 24 | 2802 | 17,09 | 71,39 | 83,43 |
| 15 | 43,09 | 23 | 2812 | 17,15 | 71,18 | 83,33 |
| 16 | 57,85 | 26 | 2829 | 17,25 | 71,02 | 83,23 |
| 17 | 53,91 | 23 | 2843 | 17,34 | 70,87 | 83,10 |
| 18 | 60,20 | 20 | 2849 | 17,37 | 70,72 | 82,98 |
| 19 | 64,87 | 23 | 2860 | 17,44 | 70,65 | 82,89 |
| 20 | 60,44 | 25 | 2875 | 17,53 | 70,54 | 82,81 |
| 21 | 70,11 | 18 | 2886 | 17,60 | 70,43 | 82,69 |
| 22 | 80,93 | 14 | 2891 | 17,63 | 70,44 | 82,54 |
| 23 | 77,58 | 24 | 2908 | 17,73 | 70,43 | 82,42 |
| 24 | 78,71 | 14 | 2916 | 17,78 | 70,35 | 82,26 |
| 25 | 84,50 | 18 | 2923 | 17,82 | 70,27 | 82,13 |
| 26 | 124,44 | 16 | 2931 | 17,87 | 70,37 | 82,06 |
| 27 | 121,07 | 15 | 2936 | 17,90 | 70,46 | 81,96 |
| 28 | 121,29 | 17 | 2941 | 17,93 | 70,50 | 81,86 |
| 29 | 130,40 | 15 | 2944 | 17,95 | 70,55 | 81,80 |
| 30 | 149,72 | 25 | 2956 | 18,02 | 70,74 | 81,83 |
| 31 | 150,76 | 25 | 2967 | 18,09 | 70,89 | 81,93 |
| Totals/ Avrgs. |
84,90 | 21,81 | 2827,77 | 17,24 | 71,61 | 83,15 |
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| Sunspot Regions of month/year May 2025 | ||||||
| Reg,1stD,Rot,Mo.Yr,Cla;Lat,Long,Mvh | Reg,1stD,Rot,Mo.Yr,Cla;Lat,Long,Mvh | |||||
| 4080 03.05.2025 2297 05.2025 BXO -12 331 0010 | ||||||
| 4081 03.05.2025 2297 05.2025 DAI 07 211 0074 | ||||||
| 4082 04.05.2025 2297 05.2025 DAC -11 177 0065 | ||||||
| 4083 05.05.2025 2297 05.2025 AXX 18 254 0010 | ||||||
| 4084 08.05.2025 2297 05.2025 CSO -20 129 0036 | ||||||
| 4085 10.05.2025 2297 05.2025 DSO 02 139 0020 | ||||||
| 4086 11.05.2025 2297 05.2025 DAO 08 207 0033 | ||||||
| 4087 12.05.2025 2297 05.2025 DHO 15 059 0166 | ||||||
| 4088 14.05.2025 2297 05.2025 CRO 09 151 0013 | ||||||
| 4089 16.05.2025 2297 05.2025 DRO 18 028 0022 | ||||||
| 4090 16.05.2025 2297 05.2025 CSO -12 021 0033 | ||||||
| 4091 17.05.2025 2297 05.2025 CAO -13 032 0020 | ||||||
| 4092 19.05.2025 2298 05.2025 CSO -14 338 0087 | ||||||
| 4093 20.05.2025 2298 05.2025 HSX -06 327 0021 | ||||||
| 4094 21.05.2025 2298 05.2025 CRO 20 328 0015 | ||||||
| 4095 21.05.2025 2297 05.2025 DAI -05 074 0040 | ||||||
| 4096 21.05.2025 2298 05.2025 HSX 06 306 0051 | ||||||
| 4097 22.05.2025 2298 05.2025 CRI -13 301 0020 | ||||||
| 4098 23.05.2025 2297 05.2025 DAI -05 017 0116 | ||||||
| 4099 25.05.2025 2298 05.2025 DKC -13 257 0190 | ||||||
| 4100 26.05.2025 2298 05.2025 EKC 07 245 0300 | ||||||
| 4101 27.05.2025 2298 05.2025 DAO 03 258 0021 | ||||||
| 4102 27.05.2025 2298 05.2025 BXO -22 297 0010 | ||||||
| 4103 28.05.2025 2298 05.2025 BXO -17 286 0010 | ||||||
| 4104 30.05.2025 2298 05.2025 DSO 06 216 0048 | ||||||
| Average CV-USAF for maximum classifications for 25 regions: 17,68, equivalent to a class FRI | ||||||
| and based on CV-table, maximum achieved is 29,47% | ||||||
| Last update: 13.03.2026 13:39 | ||||||
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