The back office gas measurement analyst requires a completely different set of skills to interpret and understand the information documented by the field regarding testing and calibration procedures. The task for the measurement analyst is to absorb the wealth of information presented, and utilize their extensive knowledge base in determining when a current month adjustment or even a prior month adjustment is warranted. Each time an analyst reviews data from the gas field, a question should be asked, "Did the technician follow the correct procedures in performing the calibration? "