DADelhi Air Health
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Reproducible research

Frozen datasets, not moving targets.

A research release freezes the station roster, normalized source snapshots and monitor-hour analysis table at a named archive boundary. Future collection continues in the live archive without changing an already-published release.

Frozen · finalDAH-2026-09-07-r1

Delhi Air Health Research Release 1

Archive: 6 Sept 2026, 4:00 pm → 7 Sept 2026, 3:00 pm. Finalized 7 Sept 2026, 4:41 pm.

Code 2.8.0 · methods 1.1.0 · analysis spec 1.0.0 · schema 2 · QC 1.0.0

Monitor hours

1,632

Feeds

68

Sites

67

Raw rows

142

Open release →ManifestSHA-256 checksums

Release contract

A release can be superseded. It must not be rewritten.

If a method, station link or QC rule changes, Delhi Air Health should publish a new release and explain the difference. Old release identifiers and checksums remain the reference for analyses that used them.