First tier hit (1st)

What

1st shows how long ago this symbol first hit P1, P2, or P3 today — not the clock time. Under 2 hours shows as minutes (45m); 2 hours or more shows as hours (3H); no hit today is blank.

So what

A young 1st means the tier just fired — you’re looking at it near the start of whatever’s happening. An old 1st means the tier fired hours ago; the symbol has been sitting in tier territory for a while, which is a different situation than a fresh trigger even if the Tier label is identical.

Now what

Fresh tier hits are worth a first look before older ones — not because older is worse, but because a young 1st is closer to the decision point that got the symbol here. An old 1st paired with the same tier all day is a candidate for Notes rather than a repeat scan.