Provided is a method for producing a difluorophosphate, which can simply and easily produce a high-purity difluorophosphate in an industrially advantageous manner. Intensity values for each of a first pixel and second pixel are extracted from each of the first and second set of image data. A cumulative distribution is calculated for an inverse coefficient of differential expression of the plurality of mass spectra using a processor. In response to determining a close temporal proximity, an instant messaging session can be launched between the two or more users and entries in the instant messaging session can be inserted as responses to the thread in the discussion form. I addition, the system can also uncover hidden fee structures associated with sellers and businesses.