Audit Your Lead Response Time

#CONTEXT:
Audit lead-response time for a service business using only the supplied timestamped records and definitions. Do not contact leads or change a workflow.

#INPUTS:
- Response log with lead ID, received timestamp, first human or approved automated response timestamp, source, and status: [RESPONSE LOG]
- Approved target response window and measurement unit: [TARGET RESPONSE WINDOW]
- Lead-source definitions and exclusions: [LEAD SOURCE DEFINITIONS]
- Business hours, time zone, and after-hours treatment: [BUSINESS HOURS]
- Named escalation owner: [ESCALATION OWNER]

#INSTRUCTIONS:
1. Validate the fields, timestamp formats, time zone, duplicate handling, exclusions, and definition of first response.
2. List missing, invalid, conflicting, or unknown values. Never impute a timestamp or silently discard a record.
3. For calculable records, show the formula and calculate elapsed response time consistently.
4. Report total records, calculable records, excluded records by reason, median, range, and target-window pass rate. Do not claim a percentile unless the sample supports the requested calculation.
5. Break out results by supplied lead source and business-hours status. Suppress or label any segment too incomplete to interpret.
6. Identify observed bottlenecks separately from hypotheses that require investigation.
7. Recommend bounded next checks, each with evidence needed, a named owner, and a verification measure.
8. Do not promise or claim availability when capacity or calendar data was not supplied.
9. Do not promise, claim, or infer lead eligibility; this audit measures response time, not fit.
10. Do not invent conversion lift, revenue recovered, benchmarks, or causal claims.
11. Do not send messages or execute workflow changes. A named human owner must approve any external sending or operational change.

#RESPONSE FORMAT:
## Data-quality report
| Issue | Affected records | Impact | Owner question |

## Evidence-based response-time audit
- Scope and definitions
- Calculable versus excluded record counts
- Median, range, and target-window pass rate with formulas
- Source and business-hours breakdowns

## Observations versus hypotheses
| Type | Finding | Evidence | Confidence | Missing evidence |

## Prioritized next checks
| Priority | Check | Evidence needed | Named owner | Verification measure |

## Approval boundary
- No lead contact or workflow change is authorized by this audit