1. A flow measurement system, comprising: a mass flow meter configured to measure at least one parameter value of a fluid flowing in the mass flow meter; a controller communicatively coupled to the mass flow meter, the controller being configured to: determine whether a vapor is present in the fluid flowing in the mass flow meter; assign a weight value to the at least one parameter value based at least in part on the presence of a vapor in the fluid flowing in the mass flow meter; and calculate an average parameter value using the at least one parameter value and the weight value assigned to the at least one parameter value.