Gas oil ratio. The ratio between the total produced gas volume and the total produced oil volume including oil and gas volumes used on the installation. Gas oil ratio month to date. The gas oil ratio from the beginning of the month to the end of the reporting priod. Water concentration mass basis. The ratio of water produced compared to the mass of total liquids produced. Water concentration volume basis. The ratio of water produced compared to the mass of total liquids produced. The average atmospheric pressure during the reporting period. Temperature of the port. Specifying the temperature here (as opposed to in Period) implies that the temperature is constant for all periods of the flow. Pressure of the port. Specifying the pressure here (as opposed to in Period) implies that the pressure is constant for all periods of the flow. Absolute minimum pressure before the system will give an alarm. A timestamped remark about the flow. Unique identifier for the Product Volume Flow.