Figure 2: NH and SH ITCZ record stacks. All records have been converted to z-scores.
From: Tropical rainfall over the last two millennia: evidence for a low-latitude hydrologic seesaw

(A) NH record compilation, the resulting stack is shown by the black line. (B) SH record compilation, the resulting stack is shown by the black line. (C) Both NH and SH stacks are shown with their uncertainties: antiphasing of the two stacks on centennial timescale becomes apparent, especially during the period 1320–1820 C.E.