@type t() :: %Sidereon.Tides.StationDisplacement{
  degraded: :before_coverage | :after_coverage | nil,
  ecef_m: [float()],
  ocean_loading_ecef_m: [float()] | nil,
  pole_tide_ecef_m: [float()] | nil,
  solid_earth_tide_ecef_m: [float()] | nil,
  valid: boolean()
}