Baseline Threshold suggests negative values.

I've tried on several monitors to use baseline thresholds, but when I do, I get negative values.

This is from the Free Pages monitor on the AppInsight for SQL Monitor.

Any idea why this is happening?

Running:

Orion Platform 2015.1.2, SAM 6.2.1, DPA 9.2.0, QoE 2.0, NPM 11.5.2, NTA 4.1.1, Toolset 11.0.1, IVIM 2.1.0