... The system temperature for the Alfa receiver is computed by month using all of the spectral line cal on/offs (wapp data) taken (see computing tsys from the archive for a description of how it is computed). ... c2*(za-14)^2 is only used for za gt 14 degrees. rotA is the rotation angle of the alfa feed . ... The fit sigma's ranged from .47K to .67 There are 14 plots in all (one for each pixel/polarization). ... The plots for each pixel/polarization: (.ps files about 10 Mb, .pdf files about 3 Mb) . ...