{
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  "trajectories": 50,
  "steps": 120,
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  "fields": [
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  "conservation_absolute_sum_mean": [
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  "conservation_initial_l1_scaled_max": [
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  "negative_h_ratio": 0.0,
  "negative_h_percent": 0.0,
  "min_h": 0.0,
  "reduction": "all trajectories, forecast steps 1..T, all grid cells; initial frame excluded",
  "accumulation_dtype": "float64 (model states float32)",
  "zero_momentum_note": "Relative drift uses |sum(m0)|+1e-8; inspect absolute drift and initial-L1-scaled drift for zero-total cases.",
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}