Fig. 4
From: The first global multi-timescale daily SPEI dataset from 1982 to 2021

Statistically significant (p < 0.05) correlation between SPEI-GD and site-based SPEI at different timescales during 1982–2018. The numbers of upper center of each subplot indicate the timescale. SPEI-GD and site-based SPEI are both daily data.