Adobe Alerts: Anomaly Above, Below, and Exists % Threshold

Hello,

What is the difference between these states in Adobe alerts as it relates to the % threshold? The way it's worded is ambiguous to me.

1. Anomaly exists
2. Anomaly below
3. Anomaly above

If I set the threshold to 95% for unique visitors to a page, for example, then can I interpret it as follows?

1. Anomaly exists = the anomalous data falls within 2 standards of the expected value
2. Anomaly is below = the anomalous data falls less than 2 standard deviations outside of the expected value, in which case, then it's 1 SD outside of the expected value?
3. Anomaly is above = the anomalous data falls more than 2 standard deviations outside of the expected value, in which case, is it incorrect to think it's 3 SD outside of the expected value?

What additional meaningful information here does "anomaly below" or "anomaly above" give me that the "anomaly exists" doesn't?

Thanks!