Figure 2
From: The risk of selenium deficiency in Malawi is large and varies over multiple spatial scales

Probability that measured plasma selenium (Se) concentration of women of reproductive age (WRA) would fall below the threshold for the optimal activity of (a) iodothyronine deiodinase (IDI), (b) glutathione peroxidase 3 (GPx3). The legend units are defined verbally, and by a range of probability values, expressed as percentages.