Table 1: Performance of sea-surface temperature estimation techniques																
																
				Transfer functions						Modern analog technique			d18O			
	FP4B		FP12E 		FI-2 		FA20RSC 		Prell (1985)		AUSMAT-F2		G. bull.	O. uni.	G. sacc.	
Statistics	Warm	Cold	Warm	Cold	Warm	Cold	Warm	Cold	Warm	Cold	T0max	T0min	T0ann	T0ann	T0ann	
Max	29.5	29.0	30.0	29.0	28.6	29.2	28.9	27.1	30.3	29.2	30.4	29.2	25	25	30	
Min	19.2	9.5	12.0	3.0	3.0	1.0	3.0	0.0	1.0	0.0	0.9	-2.0	15	15	14	
r2	0.51	0.65	0.86	0.91	0.96	0.92	0.96	0.94	0.96	0.95	0.99	0.98	0.89	0.89	0.89	
RMSEP	5.8	4.9	5.9	3.3	2.0	2.7	1.8	2.3	2.1	1.9	0.9	1.0	7.5	4.3	3.2	
Mean Bias	2.5	2.1	4.3	1.9	-1.3	-1.7	-0.9	-1.5	-1.1	-0.6	-0.1	-0.1	-7.1	-3.6	-2.5	
Max Bias	36.4	29.3	11.3	4.8	-3.2	-4.2	-1.9	-4.2	-3.0	-2.4	-1.2	-2.0	-9.7	-6	-3.9	
																
Abbreviations are as follow (see text for further explanation):																
"Min, Max = Temperature minimum or maximum of original calibration dataset; RMSEP = root mean squared error of prediction; "																
"warm, cold = February and August temperatures at the sea-surface; T0max, T0min = temperatures of the warmest and coolest months at the sea-surface;"																
T0ann = mean annual temperature at the sea-surface; G. bull. = Globigerina bulloides; G.sacc. = Globigerinoides sacculifer; O. uni. = Orbulina univera