Final answer:
Base reflectivity images in Precipitation Mode are available at different radar 'tilt' angles, with 0.5° to 19.5° being typical for weather radars like the WSR-88D.
Step-by-step explanation:
Base reflectivity images in Precipitation Mode are available at various radar "tilt" angles. On weather radars, the "tilt" refers to the angle above the horizon that the radar beam is directed. In standard operations, radars have multiple elevation angles to get a comprehensive view of precipitation. The National Weather Service's WSR-88D radars, for instance, scan at multiple elevations during Precipitation Mode that range from 0.5° to 19.5° in elevation. These captures at different angles allow meteorologists to estimate the intensity and structure of precipitation events, such as rain, hail, or snow, and to track their movement.