# `Sidereon.GNSS.QC.SystemSignal`
[🔗](https://github.com/neilberkman/sidereon-ex/blob/main/lib/sidereon/gnss/qc.ex#L245)

Per-constellation, per-code observation completeness row.

# `t`

```elixir
@type t() :: %Sidereon.GNSS.QC.SystemSignal{
  code: String.t(),
  snr: Sidereon.GNSS.QC.SnrStats.t() | nil,
  ssi: Sidereon.GNSS.QC.SsiHistogram.t() | nil,
  system: String.t(),
  value_observations: non_neg_integer()
}
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*