This table shows information about the satllites that are currently
being tracked.
PRN:
The numeric identifier of the satellite tracked on the channel. To
sort by the satellite PRN number click on PRN at the top of the column.
Elv:
The elevation of the satellite, in degrees above the horizon. To sort
by elevation click on Elv at the top of the column.
Azm:
The azimuth (direction) of the satellite, in degrees clockwise from True
North. To sort by azimuth click on Azm at the top of the column.
L1 SNR:
L2 SNR:
The Signal to Noise Ratio (SNR) of the satellite on either the
L1 or L2 frequency. Scaled to a 1 Hertz bandwidth (C/N0 - "C to
N-zero".)
IODE:
Issue of Data Ephemeris - The numeric identifier for the latest
satellite data collected from this satellite.
URA:
User Range Accuracy - The satellite's estimate of the accuracy
of its ranging signals, in meters.
Health:
Health status as provided in the satellite's most recent data. When
Healthy is displayed in this column it indicates that a value of zero,
or perfect health, was received. A non-zero values indicate that the
satellite has been marked as unhealthy. See the GPS ICD-200 for
information about unhealthy satellite codes.
Chan:
Channel number. Each channel is capable of tracking the L1
and L2 signsls from a single satellite.