Upper panel: parametric reconstruction of the plage coverage (blue line) with confidence range (gray). The plage composite from the MPI is shown for comparison (red line). Lower panel: parametric reconstruction of the sunspot coverage (blue line) with confidence range (gray). The reduction in the confidence range before 1940 is due to the lower sunspot number, which makes it no longer appreciable. The sunspot composite from MPI is shown for comparison (red line).