Infineon Designer (www.infineon.com/ifxdesigner) is a free online SPICE simulator. This tutorial video describes how to do measurement of the simulation results in the diagram window, such as using zoom-in/out to see more details, using cursors to measure the values and comparing result curves from different simulations by overlaying the curves. There are also descriptions on how to change the curve color, how to change the view and how to export the curve data.