Derived OH production rates from the GBT (red curve) and NRT (blue curves) observations of the OH 1667 MHz line in comet C/2020 F3 (NEOWISE) on 24 July 2020. OH production rates are plotted as a function of the quenching radius. The dashed lines correspond to the ±1σ uncertainty in the line area measured at NRT. Analogous dashed lines for the GBT are indistinguishable from the solid curve due to the high signal-to-noise ratio of the data. The maser inversion is i = 0.20 based on Despois et al. (1981), and the background temperature is T_bg = 3.1 K. The OH spatial distribution is described by the Haser-equivalent model (Combi & Delsemme 1980).