Клик на название графика включает/выключает его. "-Дельта" - графики скорости изменения, единиц в минуту.
Google Developer Day will be full of announcements and best practices to help developers build incredible games. Starting with a keynote, we'll then dive in to three main themed sessions including innovation & new platforms, pre-launch best practices, and ways to optimize your games post-launch. Each session will include several mini-talks from different Google teams and developer partners sharing new tools, learnings, and more. Subscribe to the Google Developers Channel: http://goo.gl/mQyv5L