Per-octave power-law classification.
@type dominance() :: :dominant | :ambiguous | :flagged
@type t() :: %Sidereon.ClockStability.PowerLawOctave{ adev_slope: float() | nil, dominance: dominance(), flag: atom() | nil, mdev_slope: float() | nil, noise_type: atom() | nil, point_count: non_neg_integer(), slope_scatter: float() | nil, tau_end_s: float(), tau_start_s: float() }