This read-only Unsigned32, expressed in dB-Hz, reports the Carrier-to-Noise ratio representing the signal strength and quality of this tracked satellite's signal as received by the GNSS receiver. An administrator monitors this to judge whether the receiver has enough usable satellites with strong signals to maintain an accurate timing reference. For example, a satellite entry showing a low C/N0 value might explain why the GNSS-derived clock is contributing less reliably to the timing solution than satellites with higher reported values.