# Data dictionary

- `attempts.csv`: one row per attempt with peak/timing/asymmetry/proxy metrics and uncertainty sensitivity ranges.
- `events.csv`: phase landmarks and frame-accurate timestamps.
- `timeseries.csv`: 60 Hz selected kinematic and proxy channels.
- `frames.parquet`: full 33-landmark image/world pose and derived channels.
- `twin.json`: 30 Hz 33-joint 3D playback; image-calibrated x/y and non-metric model-derived z.
- `overlay.json`: 60 Hz pixel landmarks for synchronized video overlay.
- `depth/*-depth.png`: 16-bit per-frame normalized relative inverse depth.
- `depth/*-mask.png`: 8-bit person segmentation probability.

All relative-depth frames are normalized independently. Do not compare their numeric depth values across time. Force and power fields are explicit proxies.
