1. From the results for each material, create a graph in Excel with temperature as the Y axis and the thermocouple numbers (which signifies distance along the bar) as the X axis. You should be able to draw a good best-fit line through your results, similar to the chart below. For each material, plot a different colored line for each of the power settings (30W, 40W, 50W) on one chart, so you can compare them together