# Filter 3: Diurnal temperature range

**Status:** Not started.

**Data key:** `avgDiurnalTempRangeF`. Calculation:
[filter-calculations.md](../filter-calculations.md) §3.

## Findings

No filter-specific findings yet.

Cross-filter findings that affect this filter, in
[00-cross-filter.md](00-cross-filter.md): 12 (Alaska and Hawaii not covered),
13 (Lexington, VA blank), and 17 (missing from the data-sources metric list).

## Decisions

None yet.

## Tasks

Not started; follow the per-filter review checklist in
[pipeline-plan.md](../pipeline-plan.md) §5.