Table 1: Comparison between ESPI spectral maxima, grouped in 6 classes of periods (yr), and the ones of the d18O-CO2 of both NOAA and SIO series, ordered by latitude.

Period	>20	11-13	6-7	4-6	2-4	1-2
Station		NOAA
BRW		X	X	X		X
MLO		X	X	X	X	X
SPO		X	X	X	X
Station		SIO
BRW	X	X	X	X	X	X
MLO		X	X		X	X
SPO		X		X	X	X
ESPI	X	X	X	X	X	X