640817.fig.004a
(a)
640817.fig.004b
(b)
640817.fig.004c
(c)
640817.fig.004d
(d)
640817.fig.004e
(e)
640817.fig.004f
(f)
Figure 4: Different statistical effects in sunspot area cycles 7–22: (a) Gnevyshev-Ohl GO1; (b) Gnevyshev-Ohl GO2; (c) Waldmeier W1; (d) Waldmeier W2; (e) amplitude-period AP1; (f) amplitude-period AP2. A standard deviation from the linear fit is shown with dotted lines.