Natural Gas Storage 30d Z-Score

Rolling 30-day Z-score of weekly EIA Lower-48 working gas in storage. Positive = inventory building above trailing window; negative = drawing below.

Category: calculated. Derived metrics combine multiple data sources into single indicators. These are computed server-side so you get the interpreted signal without building the calculation yourself.

API: GET /api/metrics/natgas-storage-zscore

Used in briefings: Energy Basket, Commodities Full Picture

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