pub const SIZE_WINDOW: f64 = 3.0;Expand description
Largest and middle extent within this factor (with scale). A hit needs
size ≥ MIN_SCORE, i.e. Σ|ln ratio| over three extents ≤ 1.5·ln 2, so
no single extent of a hit is off by more than 2^1.5 ≈ 2.83.