Returns data frame with following columns:
Description Terse description of a sample
Title Title of particular measurement
Sample Name of the sample
Unit To which unit the sample belongs
Date Day when the sample was taken
RRxsRosin - Rammler distribution xs coefficient
RRexRosin - Rammler distribution ex coefficient
RRmsmodus calculated from Rosin - Rammler approximation
RRmnmean calculated from Rosin - Rammler approximation
RRo90umPPCCCDF (oversize) value in % calculated from Rosin - Rammler approximation for equivalent particle size of 90 micrometers