Account, audience, and time zone: [details]

Format and content purpose: [one comparable group]

Window A and window B: [day and local time]

Post, topic, and publishing time: [one row per post]

Review interval: [for example, 72 hours after publication]

Primary result: [saves / enquiries / another goal]

Denominator, if used: [reach / other named metric]

Paid promotion or unusual event: [note]

Typical result and sample size for each window: [values]

Decision and next review date: [keep / extend test / revise]