Local Level Lab

Airborne measurements. Open methods.

Evidence dataset

The development snapshot, version 2 brings the selected observations, numerical results and validation status together without changing the completed analysis.

Included Coverage
Selected stretches and source/track metadata 53
Latest primary model/processing-case comparisons 318
Preserved numerical-history records 791
Conservative development split groups 27
Retained-file eligibility outcomes 232
Raw-gyro geographic baseline comparisons 159
Catalog entries with reconciled storage/eligibility 326
Numerical records linked to publication and operation environments 791

The history includes 244 records not marked converged. They remain visible alongside later successful work; some entries are diagnostics rather than optimizer starts. The latest complete numerical disposition remains 53 globe, zero flat and zero unresolved.

An IMU (inertial measurement unit) records turning and specific force. Its gyro increments supply the observed turning; receiver positions supply the route context. The snapshot keeps those roles, source fingerprints and unknown instrument identities explicit. Conservative groups do not establish a count of independent flights.

This version is for development and audit. Qualified withheld-prediction adequacy, observational error assessment, independent confirmation and calibrated decisions remain open. The acquisition-flow and operation/environment indices are now complete: 58 initial no-level rejections, 35 later rejections and one verified duplicate removal reconcile the 326 entries with 232 retained files. Sixteen history origins resolve to 23 execution manifests and two recorded numerical environments. Later publication reviews retain their own environment separately from the operations they describe. The snapshot does not label numerical preferences as calibrated detections or claim to be the final paper dataset.

The tables and checker use frozen input copies and recorded SHA-256 hashes. Later project changes cannot silently alter this version. Assembly and checking read saved metadata, not original recordings, and run no model predictions or fits. --check-public works in a repository checkout without the runtime data directories. Protected ESA outcomes are not part of the dataset. Version 1 remains sealed.

Current findings · Raw gyro companion · Roadmap.