SIDC: The Solar Influences Data analysis Center website
NASA/Marshall Solar Physics
Solar Cycle 24 Status and Solar Cycle 25 Upcoming Forecast | NOAA / NWS Space Weather Prediction Center
Sun spot numbers dramatically decline during a grand solar minimum
climate4you Sun
File:Sunspot Numbers-fr.svg - Wikimedia Commons
SWS - Solar Conditions - Monthly Sunspot Numbers
Sunspot Activity on The Sun Is Seriously Exceeding Official Predictions : ScienceAlert
The sun is still in a funk: sunspot numbers are dropping when they should be rising – Watts Up With That?
Sunspot data from 2004 to the 2017 from database of the Royal... | Download Scientific Diagram
Sunspots and Climate | Center for Science Education
SpaceWeather.com: The Sunspot Number
Data Analysis and Statistics (Mathematics)
File:Changes in total solar irradiance and monthly sunspot numbers, 1975-2013-da.png - Wikimedia Commons
Graphs demonstrating improved agreement between Old and New Sunspot Numbers | IAU
Sunspot Cycle | COSMOS
Figure 1 | Overlapping Magnetic Activity Cycles and the Sunspot Number: Forecasting Sunspot Cycle 25 Amplitude | SpringerLink
Sunspot data (NEW IMPROVED VERSION uses dlmread)
Sunspot Cycles, Butterfly Diagrams, Plasma Conveyor Belts
10:30 AM | *Now entering a deep solar minimum and the latest forecast for solar cycle 25 suggests it may be the weakest cycle in 200 years* — Arcfield Weather
NASA/Marshall Solar Physics
Solar cycle - Wikipedia
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