Left, system temperatures (Tsys) measured at Los Alamos vs. airmass. Straight lines are fits of linear models to the lower envelopes of the Tsys distributions. The receiver temperature is estimated as the extrapolation of the lower envelope to a null airmass. Right, zenith opacity (i.e., opacity multiplied by the sine of the antenna elevation) at Los Alamos vs. time, as estimated using Eq. (1).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.