The full data set from our in-depth investigation into mass shootings.

The number of neutrophils in the blood is absolute neutrophil count (ANC), and measures the percentage of neutrophils in the differential white blood cell count.

A calendar year is a one-year period that begins on January 1 and ends on December 31, based on the commonly-used Gregorian calendar.

A share repurchase is a company's buyback of some of its stock on the open market which increases its earnings per share and can lead to an increase in demand.