This read-only value, in dB, reports the signal-to-noise ratio (SNR) - the GPS-standard measure of signal strength - for a specific tracked satellite. An admin uses this per-satellite SNR to judge the quality of GPS reception in detail, identifying whether poor fixes are due to generally weak satellite signals across the board or issues with specific satellites. For example, if most tracked satellites show low SNR values, the admin might suspect a GPS antenna or cabling problem rather than a temporary satellite geometry issue.