They also calculated impact dose injury risk parameters common to laboratory and on-field traumatic neuromechanics: linear acceleration, angular acceleration, angular velocity, Gadd Severity Index, diffuse axonal injury, acute subdural hematoma, and brain contusion.

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To explore this they used an index of weather severity called the North Atlantic oscillation.

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Not a fan of debt, Baron kept plowing his profits back into software enhancements that could garner monthly subscriptions--like the Baron Tornado Index, which ranks the severity and direction of storms on a scale of one to ten.

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Its report grades cities using, in part, the EPA's color-coded Air Quality Index, as well as its own weighting system that ranks the severity of pollution on a daily basis.

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