[Home](./index.md) > [puppeteer](./puppeteer.md) > [Protocol](./puppeteer.protocol.md) > [Browser](./puppeteer.protocol.browser.md) > [Histogram](./puppeteer.protocol.browser.histogram.md) > [sum](./puppeteer.protocol.browser.histogram.sum.md) ## Protocol.Browser.Histogram.sum property Sum of sample values. Signature: ```typescript sum: integer; ```