Datapoint Lingala/Urban/rural variation: lexicon
One could see the urban/rural distinction as a paraphrase of the geographical variation mentioned in the Feature "Geographic variation: lexicon", the Northwest being more rural than the Southwest, where Kinshasa is Lingala's main stronghold.
The more correct value would be in between "widespread" and "limited". "Widespread" is too strong, "limited" too weak.
Values 
Widespread
- Confidence:
- Certain