{"state": "uncalibrated", "statement": "Model accuracy against instrumented sites has not been established: 0 reconciled observations across 0 sites, covering 0 of 19 model outputs. Every figure in this report is modelled. The uncertainty ranges shown come from input uncertainty propagated through the model, not from the difference between this engine's predictions and site data \u2014 no such difference has been recorded yet.", "observations": 0, "sites": 0, "keys_asserted": 19, "keys_with_site_observations": 0, "coverage": 0.0, "keys": [], "uncalibrated_keys": ["constraint.architecture_capability.racks", "constraint.busway_ampacity.racks", "constraint.cdu_capacity.racks", "constraint.floor_loading.racks", "constraint.floor_space.racks", "constraint.grid_firm_capacity.racks", "constraint.hydraulic_flow.racks", "constraint.plant_capacity.racks", "constraint.rack_feed_tapoff.racks", "constraint.residual_air_removal.racks", "constraint.tcs_supply_achievable.racks", "constraint.transformer_capacity.racks", "constraint.ups_capacity.racks", "economics.capex_total_eur", "envelope.facility_load_kW", "envelope.it_load_kW", "envelope.racks", "schedule.weeks_to_full", "thermal.pue"], "ledger_sources": 1, "policy": "An observation must be E5 or above \u2014 site data, not another run of our own model \u2014 and client site data never enters the published ledger."}