This sample chart is for comparing today's 1-hr data and yesterday's data (the interval between the two consecutive data is 10 secs). During the initial loading of the chart, this chart displays all of yesterday's data and today's data collected by the time of running. After the initial loading of the chart, this chart sends RPC requests every 10 seconds and displays items received from the server. After the specified period of time of displaying, the chart refreshes all of the data, which means that the chart requests yesterday's data again and requests today's data every 10 seconds. More