# usage

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As of the index built 15 Sep 2026, 19:59 UTC · [cites, never asserts](/standing).
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## Definitions

No reader has asserted a definition or an alias for it; its meaning is what its uses show.

## Where it is used (4 uses on 1 subject in 1 work)

By drillable.com ([llm-extract/3](/standing#methods)).

- **automotive industry** = monitor the levels of pollutants emitted by vehicles, such as nitrogen oxides (NOx) or particulate matter · [quote](/r/sha256:0bd48b61138e0b019e0b2d24aa359a80ecbfff8b78377dced4464a90508a3adc?trace&start=9661&end=9824) · [sha256:0849fb1c3d27289a…](/r/sha256:0849fb1c3d27289a9c337e370afde29a183f053d661650395dea3bb014ec04f0) · same value when read [14 Sep 2026, 16:43 UTC](/r/sha256:362b984f8e5f44b13a057249b59acc1c874bb17eb05e14def76ebf5fcc9d1802)
- **automotive industry** = ppm is used as an established key performance indicator (KPI) [superseded] · by [a reading of another capture](/r/sha256:0849fb1c3d27289a9c337e370afde29a183f053d661650395dea3bb014ec04f0) · [quote](/r/sha256:f19b55d9428add6651c5fc22c295f05d63755ea2757b3318becb75d9dab9cfe6?trace&start=10982&end=11043) · [sha256:684bc1656f70cf2b…](/r/sha256:684bc1656f70cf2b38b7c6cdad6ca8ebdb09ccf27f152c67bcaf9fa7b34960a5)
- **automotive industry** = established key performance indicator (KPI) [superseded] · by [a reading of another capture](/r/sha256:0849fb1c3d27289a9c337e370afde29a183f053d661650395dea3bb014ec04f0) · [quote](/r/sha256:6ad3f3caf270d272ed292d778178016ab57905b9b2b67d516d5f1dcdc37014c8?trace&start=11900&end=11961) · [sha256:bb563e36cc3b77ba…](/r/sha256:bb563e36cc3b77ba6c88337d984a49a1ca3972d2b125e9647ae9ca25d23b60b7)


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