A new way to learn from the history. ReSES.net now is equipped with a new tool called sH Graph. Using sH graph the user can compare the reference (last spectrum) with any CM Point spectrum from the history. As a result the user can see a new graph (sH Graph) that shows the difference between amplitudes at each frequency. The sH Factor shows the overall difference between reference and history spectra. The sH graph allows you quickly to compare the reference spectrum with spectra when the equipment CM Status was Good or it was Not Acceptable.