Fig. 2: Reliability of the drought index.
From: Multi-annual prediction of drought and heat stress to support decision making in the wheat sector
Reliability diagrams (lines) for probabilistic categorical forecasts (tercile events) of unadjusted SPEI6 estimate (a, c) and for the calibrated index (b, d) over Global spatial domain (top) and Asia (bottom). The frequency of occurrence of each bin for each category is shown to the right of the panels.
