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regional_d13c_stacks.csv and .xls

	Row 1: headers (region codes (described below), 95% confidence interval half-width)
	Region codes
	INA = intermediate North Atlantic
	UDNA = upper deep North Atlantic
	LDNA = lower deep North Atlantic
	ISA = intermediate South Atlantic
	DSA = deep South Atlantic
	II = intermediate Indian
	DI = deep Indian
	IP = intermediate Pacific
	DP = deep Pacific

	column 1: age (kyr) (6:1:20)
	Even-numbered columns: d13C stacks, d13C for each time step
	Odd-numbered columns: 95% CI half-width for each regional d13C stack (hw)

regional_d13c_stacks.mat: region variables for d13c and 95% CI half-width (hw)