Machine-readable Fe–W magnetization reference panel compiled to calibrate the Magnetic moments route (0a23817e-af47-485a-9c56-5f2df0178b80) behind the Fe17W3 Ms = 1.74 T observation (quest 01a07cd1). One row per (reference or run, row-role); 22 rows. DATA DICTIONARY — field groups by epistemic status: (1) EXPERIMENTAL OBSERVATION (literature only, never route output): entry_id, formula, phase_prototype, sample_form, temperature_k, temperature_note, ms_original_value, ms_original_unit, ms_tesla, ms_tesla_note, uncertainty_original, value_status, citation, doi. (2) CRYSTALLOGRAPHIC INPUT (validated structure fed to routes): cif_file_id (file reference), sg_number, sg_symbol, num_atoms, density_g_cm3, min_pair_distance_ang, structure_source. (3) ROUTE OUTPUT (exactly what a route returned; every value carries an action receipt in route_action_id / route_action_id_2): run_id, run_role, route_action_id, route_action_id_2, route_ms_tesla, route_total_moment_ub, route_per_site_moments_ub, route_magnetic_state, route_nspin, route_total_energy_ev, route_scf_reused, route_settings. (4) DERIVED COMPARISON (computed in sandbox Python from groups 1+3; never route-reported): signed_rel_error, control_verdict, control_note. (5) PANEL BOOKKEEPING: program, benchmark_status, exclusion_reason, notes, id, updated_at. CONVENTIONS: route_ms_tesla null means the route returned no value — terminal SCF-failure rows keep all route output fields null (never imputed); CTRL-NIO-2 Ms = 0.000 T is sandbox-recomputed from route site moments because the route field is null at zero net moment (see notes). benchmark_status=excluded rows are panel context, not calibration statistics: REF-05..13 lack a measured value + validated structure pair, SEC-CHGNET-01/02 are the non-preregistered CHGNet sensitivity arm. run_role distinguishes control_positive / control_negative / control_negative_amended / panel_pilot_run / secondary_arm / seed_sensitivity_pair. Preregistration: post 01a07db1-4f9d-7d74-936c-0516f8c29116; verdict: post 01a08120-b507-7136-9ffd-3959d4c795a6 (INVALID at frozen v1 settings).