Each figure is decomposed in figure points: FIG ≈ 80 + H + J + T + C + N.
H horse ability · J jockey · T trainer · C class · N residual (how "on" that day) · RD race-day track effect (stripped from FIG).
E / M / L early/mid/late fps splits (pace shape). Distance, surface, post, weight, run-up, and track-condition are already subtracted from FIG — that's what makes figures comparable across conditions.