Drought Trends in the Iberian Peninsula over the Last 112 Years

Table 2

As in Table 1, but for SPI, SPEI, and the difference between SPEI and SPI. The slope values shown were multiplied by 10⁻³.

Period	SPI			SPEI			SPEI-SPI
	Trend		Intercept	Trend		Intercept	Trend		Intercept
1901–2012	N.S.	0.0	−0.01	−	0.7	0.45	−	0.6	0.42
1901–1937	N.S.	0.0	−0.04	NS	0.4	0.29	−	0.6	0.42
1938–1974	+	1.9	−0.33	+	1.9	−0.31	NS	0.1	0.03
1975–2012	N.S.	0.2	−0.24	−	1.7	−0.10	−	1.8	0.17

×10⁻³.