GPT-5.3-Codex vs GPT-5.6 Terrafor spreadsheets & Excel

Build a **time-series line chart**. Put **week ending date** (or week number in chronological order) on the **x-axis** and **total weekly revenue** on the **y-axis**.  
If possible, add a second view grouping by **month-of-year** (or week-of-year) to highlight repeating patterns.

What it will **not** tell you: whether the pattern is caused by seasonality versus other factors (promotions, stockouts, pricing changes, holidays). It shows pattern, not cause.

Build a time-series line chart. Put week/date on the x-axis and weekly revenue on the y-axis. This makes recurring peaks and dips across the 14 months easier to spot, suggesting possible seasonal patterns. However, the chart will not tell them *why* sales changed—for example, whether a spike came from seasonality, promotions, holidays, price changes, or stock availability.