The Worheimer Index is a standardized metric system used in the world of YiHuan to measure anomaly activity intensity. Named after its discoverer Worheimer, it calculates a value reflecting the current anomaly activity level of an area through the comprehensive analysis of multiple indicators including anomalous particle concentration in the air, degree of spatial distortion, and time flow deviation.
The Bureau of Anomaly Control has deployed Worheimer Index monitoring stations throughout the city, providing real-time monitoring of anomaly activity levels in each area. When the index exceeds safety thresholds, the system automatically issues warnings, and the Bureau dispatches Espers accordingly. The Worheimer Index is also used to assess the severity and danger level of anomalies, helping the Bureau allocate response resources appropriately.
Worheimer Index readings are divided into five levels: Level 1 (normal range), Level 2 (minor anomaly), Level 3 (moderate anomaly, attention needed), Level 4 (severe anomaly, immediate Esper dispatch required), and Level 5 (extremely dangerous, requiring elite teams like ETD-4). In the story, persistently elevated Worheimer Index readings in certain areas hint at deeper anomaly sources that have yet to be discovered.