Клик на название графика включает/выключает его. "-Дельта" - графики скорости изменения, единиц в минуту.
Former president Barack Obama talked about the state of U.S. democracy at the University of Illinois, Urbana-Champaign campus on Sept. 7. Subscribe to The Washington Post on YouTube: http://bit.ly/2qiJ4dy Follow us: Twitter: https://twitter.com/washingtonpost Instagram: https://www.instagram.com/washingtonpost/ Facebook: https://www.facebook.com/washingtonpost/