A circuit defines a group of reference points and their elevations derived from a single origin with multiple instrument heights. Sequence number identifying the cricuit within the gaging levels task. The starting date and time of the circuit. The ending date and time of the circuit. The userid of the person operating the level. The userid of the person operating the leveling rod. The air temperature at the beginning of the circuit. The name of the objective point for which the elevations are based on. The Given. The elevation of the starting objective. The Given elevation. The total error computed for the circuit. The error applied to each objective point to get the adjusted elevation. The error is a function of the number of setups.