Also, note that the gain specification in the header field is in reference to the maximum gain of the main lobe of the antenna. This is important to know for the downtilt version of our antennas. Start with the gain point at zero degrees as seen below for both types of plots. Move clockwise around the polar plot.
Data values are positive, but represent the number of dBs below the maximum gain point.
All patterns use the maximum gain point as the zero dB point. A vertical and horizontal pattern is shown below.