# `Sidereon.GNSS.QC.ObservationHeader`
[🔗](https://github.com/neilberkman/sidereon-ex/blob/main/lib/sidereon/gnss/qc.ex#L99)

Header metadata copied into a QC report.

# `t`

```elixir
@type t() :: %Sidereon.GNSS.QC.ObservationHeader{
  antenna: Sidereon.GNSS.QC.ObservationAntenna.t() | nil,
  antenna_delta_hen_m: {float(), float(), float()} | nil,
  approx_position_m: {float(), float(), float()} | nil,
  duration_s: float() | nil,
  marker_name: String.t() | nil,
  marker_number: String.t() | nil,
  marker_type: String.t() | nil,
  receiver: Sidereon.GNSS.QC.ObservationReceiver.t() | nil,
  time_of_first_obs: Sidereon.GNSS.QC.ObservationTime.t() | nil,
  time_of_last_obs: Sidereon.GNSS.QC.ObservationTime.t() | nil
}
```

---

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