Panel a: scatter diagram between daily (monthly) sunspot number and daily (monthly) sunspot areas from this work, in black (red). Panelb: same but for the areas from the BA09 series. The relevant correlation coefficients (cc) are printed in the respective panels. Panels c and d: binned values of scatter (σ) in sunspot areas (this work in black and BA09 series in blue) vs. sunspot number (binned values of 20) for the daily and monthly data, respectively. Error-bars represent the 90% confidence intervals of σ.