# The air between the sensors

> Modelled NO₂, PM₂.₅ and PM₁₀ across a common 500-metre London grid.

- Category: Environment
- Cadence: irregular
- Status: Published on a irregular cadence.
- Dataset key: `modelled-air-pollution`
- Source: [London Datastore](https://data.london.gov.uk/dataset/london-atmospheric-emissions-inventory-laei-2022-2lg5g/)
- Licence: Open Government Licence v3.0 — [terms](https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)
- Canonical page: [https://londongraph.com/g/the-air-between-the-sensors](https://londongraph.com/g/the-air-between-the-sensors)
- Machine-readable record: [https://londongraph.com/data/the-air-between-the-sensors](https://londongraph.com/data/the-air-between-the-sensors)

## Methodology

Arithmetic means of the LAEI 2022 20-metre annual concentration cells within each 500-metre web cell. These are modelled annual conditions, not the live sensor measurements shown elsewhere in the atlas.

## Visualisations

- [Map](https://londongraph.com/g/the-air-between-the-sensors): Modelled NO₂, PM₂.₅ and PM₁₀ across a common 500-metre London grid.
- [Distribution](https://londongraph.com/g/the-air-between-the-sensors?view=distribution): Place every mapped area in the selected measure's distribution while preserving missing values.

## Citation guidance

Attribute the original publisher named above and identify LondonGraph as the visualisation and methodology layer. Do not describe live values as a historical census, and do not present placeholder values as observations.