Pie Chart Filled Icon in iPhone Style

This is a Pie Chart Filled icon. We've made it in iOS style, first introduced in iOS version 7 and supported in all later releases up until now (at least iOS 11). This style is based on thin two-pixel lines and is optimized for 50x50 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 12,400 icons, all in the same style and quality.
This icon is shaped like a circle. In the upper left hand side of the circle, a wedge has been cut out, and is being pulled away from the rest of the circle. The circle appears to be farther away from us than the wedge.

Idea of Pie Chart Filled Icon by robert.muehsig

We've received the idea on November 23, 2011 and created the icons on December 11, 2011

Chart Symbols

Stats icons, like pie-chart, diagram, etc
What is that for?