• 3.7 baseline — 0.6 × season 4.2 (6 gm) + 0.4 × last 10 3.1
• −0.1 opponent leak — they concede 92/game vs a 93.4 league average
• at this ground: too thin to count (1 gm) — shown, adds nothing
• vs them: averages 0.0 over 1 game — evidence, never summed

Most signals here point under while you're on the over — worth reading the working above before you commit.

Derived, not measured — plain arithmetic over his real games, shown in full. Adjustments can overlap (a game at this ground can also be a wet one); they add simply, and this note is the admission. Round 19: 9 — far outside his usual range; kept in the average, not smoothed away.