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A line graph depicts the amplitude versus wavelength from 400 to 700 nm. Three colored lines represent different data sets: blue for v1, orange for v2, and green for v3. The lines fluctuate across the graph, each with specific peaks and troughs. A legend indicates standard deviations: v1 (σ = 40.415), v2 (σ = 31.182), and v3 (σ = 11.919).