Average daily sunspot numbers during the past week rose 84.3 points, from 118.4 to 202.7. Average daily solar flux was up 11.3 points to 160.4.

The predicted average solar flux on April 19 for the next four days, April 24-27, was 150, but this was downgraded yesterday. On April 23 the average for the same period was adjusted down to 122.5, and on April 24 the average over the same period was 123…

American Radio Relay League | Ham Radio Association and Resources

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