Figure 2From: Syndromic surveillance: STL for modeling, visualizing, and monitoring disease counts Outbreak sample. Randomly generated outbreak of 76 cases injected according to the Sartwell model [26] is shown by the histogram. The lognormal density of the model multiplied by 76 is shown by the curve. The parameters of the lognormal are the mean, ζ = 2.401, and the standard deviation, σ = 0.4626, both on the natural log scale.Back to article page