This read-only value, in dB, reports the Ec/Io signal-quality measurement for a specific nearby cell detected by the modem. An admin uses this alongside the nearby cell's RSCP to fully assess whether a neighboring cell would provide better connection quality than the current serving cell, since Ec/Io captures interference effects that RSCP alone does not. For example, a nearby cell might show decent RSCP but poor Ec/Io due to interference, telling the admin that cell isn't actually a better choice despite its raw signal strength.