Transmission Spectroscopy Metric for known planets that can be observed with the JWST NIRSPEC/Prism. The sample is limited to exoplanets with equilibrium temperatures below 500 K and radii smaller than 1.5 R_⊕ and orbiting stars fainter than J = 10.5. The x-axis is limited to 16 times Earth insolation flux. TOI-1680 b is labeled and highlighted with a star. Data were taken from NASA Exoplanet Archive on June 25, 2023.