The observed and predicted ​Solar Cycle is depicted in Sunspot Number in the top graph and F10.7cm Radio Flux in the bottom graph.

In both plots, the black line represents the monthly averaged data and the purple line represents a 13-month weighted, smoothed version of the monthly averaged data. The slider bars below each plot provide the ability to display the sunspot data back to solar cycle 1 and F10.7 data back to 2004.

The mean forecast for the current solar cycle (Cycle 25) is given by the red line. This is based on an international panel that was convened in 2019 for this purpose. In February, 2023 the plot was modified to show the full range of the 2019 Panel prediction as the gray shaded region (similarly for the F10.7 cm plot). This takes into account expected uncertainties in the cycle start time and amplitude. Use the drop-down menu below each plot to display specific curves within this range.