Faint late-day awareness only

2. T+04:00:00 [intensity]

intensity 

± PLUS/MINUS — Threshold — something may be present, but it's right at the edge of perception. A stronger experience would confirm it; otherwise it may be nothing.

3. T+00:00:00 [note]

Only a vague sense of something was noticed late in the afternoon, plus a hint of darting bodily sensations when falling asleep. There was no mental effect at all, and the author decided not to push the dose higher.