CTL (fitness, 42-day), ATL (fatigue, 7-day) and TSB (form = CTL − ATL), computed from a heart-rate/duration training-load estimate — not Garmin's official Firstbeat training status, which isn't available on your devices.

Running distance per week, last weeks, with a linear trend line.

Generated once from your fitness/mileage trend, then kept fixed — edit training_plan_config.json by hand and it won't be overwritten on refresh (run with --regen-plan to force a fresh plan).

Share of running distance in the window, graded by time spent above your estimated threshold heart rate ( bpm, ).

Runs ≥8 km or ≥40 min (excluding interval/threshold sessions): % drop in pace-per-heart-rate efficiency, first half vs. second half. Under ~5% is generally considered well-controlled; above ~10% suggests fading form or heat/fatigue.

Daily step count.