ONE CHART PLAN PER QUESTION
Audience and analytical question:
Chart type and reason:
Population, period/cutoff, x/y definitions, units and common scales:
Underlying count/denominator table:
Bin boundaries or categories (state inclusive/exclusive ends):
Labels, non-colour distinctions and text/table fallback:
Interpretive title and limitations:
Checks: totals reconcile; same scales; no false continuity; inclusive 4h metric handled separately from [2,4) bin.
Create three plans: duration distribution; timeliness comparison; channel composition. Build or sketch one, keeping its count table.