An apparatus and method for measurement, analysis, and optimization of content delivery over a communications network is presented. Formula : Z1\u2014X\u2014Z2 wherein a) Z1 represents CO2H or a derivative thereof; b) Z2 represents F, H, \u2014CO2H or a derivative thereof; and c) X represents fluorinated alkylene; or a solvate thereof, for example a perfluorinated fatty acid or derivative thereof. After writing the part of the data to the first analog memory cell, a second voltage level that does not belong to the constellation is read from the first analog memory cell. In order for the queue to take advantage of the interruption capability, it is enabled for interruptions. The present invention may be widely applied to multimedia broadcasting, terrestrial radio broadcasting, cable broadcasting and the like.