Each acute system is scored by its live reading against published thresholds (click any system above to see its own):
STABLE = 1 · WATCH = ⅔ · DEGRADED = ⅓ · CRITICAL = 0.
The Earth Conditions Index is the plain average across all ten systems, ×100. Every system counts equally. Three ceilings then apply, so that a disrupted system cannot be averaged away by the calm ones: the index cannot read above 84 while any system is degraded, above 69 while any is critical, or above 54 while two are. A feed that cannot be reached is excluded from the average rather than counted as calm.
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Informational use only: a derived summary of public data, provided as-is, with no warranty. It is not an official alert system and must not be used for emergency, safety, navigation, medical, insurance, or financial decisions. For those, rely on the primary sources and your local authorities.