# `Sidereon.GNSS.QC.SystemObservation`
[🔗](https://github.com/neilberkman/sidereon-ex/blob/main/lib/sidereon/gnss/qc.ex#L173)

Per-constellation observation completeness row.

# `t`

```elixir
@type t() :: %Sidereon.GNSS.QC.SystemObservation{
  completeness_ratio: float() | nil,
  epochs_with_observations: non_neg_integer(),
  expected_observations: non_neg_integer(),
  gap_count: non_neg_integer(),
  satellites_seen: non_neg_integer(),
  system: String.t(),
  total_gap_s: float(),
  value_observations: non_neg_integer()
}
```

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