A time series of frequency data like the one below is what I want to plot. I tried a variety of charts, but they all placed the time (8:00) precisely within the data series column. I also tried typing 8-9, 9-10, and 10-11, but that just looks terrible because time series must be continuous. The data series should start and conclude at 8:00 and 18:00, respectively, and should fall within the intervals of 8-9-10-11, etc. Any recommendations?