Data Coverage FAQ
How far back does historical data go?
| Product | Full Name | History |
|---|---|---|
| GBSI-US | Gas Balance Stress Index - US | 2010+ |
| GBSI-EU | Gas Balance Stress Index - EU | 2015+ |
| GLMI | Global LNG Marginality Index | 2016+ |
| PEMI | Power Event Market Intelligence | 2018+ |
| WRSI | Weather Risk Stress Index | 2015+ |
| WSSI-US | Weather Storage Shock Index | 2018+ |
Can I access data before my subscription?
Yes, your subscription includes all available historical data.
Is historical data point-in-time accurate?
Yes, every row is stamped with when it became knowable and when Snowtrail held it, and as_of reconstructs what was held on a past date back to each product's effective start.
How often is data updated?
- Real-time events: Within minutes
- Daily signals/features: By 06:00 UTC
- Weekly data: Shortly after source publication
How are missing values handled?
Missing values are explicitly marked (null) rather than interpolated.