I suggest a scatter-graph of line graph, with time as the independent axis.
A line graph.
Line Graph.
A double line graph is used to compare two sets of data. Usually the data is taken over a period of time and compared at set intervals.
Bar graph for amounts. Histogram for amounts over a certain amount of time.
A line graph is the best choice for graphing your data when you're showing quantitative data (numbers) over time. A bar graph is best when you're showing qualitative data and quantitative data at the same time. A line graph could be: Laps run in a minute. A bar graph could be: Laps run by Legolas, Gimli, Hermione, and Harry in 5 minutes.
you can see the change over time
line graph
A line graph is used to show data over time.
A line graph to compare temperatures over time. A bar graph to compare temperatures at different locations (cities), for example.
a line graph
if you are graphing a change over time, a line graph. if you are comparing data, it's a bar graph.
Bar graphs can compare two sets of data, as well as line graphs and circle graphs. To better improve my answer, double line graphs and double bar graphs compare two sets of data. Circle graphs cannot however, because they compare parts of a whole instead of, as a bar graph would, the amount of something. A circle graph is also incapable of showing data growth over a period of time, as line graphs do. All in all, circle graphs cannot compare to sets of data, and bar graphs and line graphs must be doubled to do so.