(a): 12-point running means of monthly international sunspot numbers, R _1yr. (c) and (e): Reconstructed annual near-Earth SW speed V _{SW 1yr} (panel (c)) and IMF B _1yr (panel (e)) from the various pairings of geomagnetic indices. The blue filled and black open dots give annual mean and median values, respectively, of satellite observations and the cyan line in panel (e) is the modeled field B _m shown in Figure 1. (d) and (f): normalized distributions of hourly (in gray) and annual (in blue) means of V _SW (panel (d)) and B (panel (f)), observed during the space age (note that the pdf scale has been halved for annual values for clarity). Panel (d) also shows the distribution of hourly V _SW means for the calendar year 2009. (b): V _{SW 1yr} as a function of B _1yr. In panels (b), (c), and (e), black, red, orange, and green are for reconstructed values from the pairings of, respectively, IDV(1d) − aa _C, IDV − aa _C, IDV(1d) − IHV, and IDV − IHV.