• 0.2 baseline — 0.6 × season 0.2 (15 gm) + 0.4 × last 10 0.1
• +0.0 opponent leak — they concede 12.3/game vs a 12.2 league average
• −0.0 at this ground — averages 0.1 there (8 gm)
• wet forecast: too thin to count (2 gm) — shown, adds nothing
• vs them: averages 0.0 over 5 games — evidence, never summed

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 3: 2 — far outside his usual range; kept in the average, not smoothed away.