The Integral value is the integral of the quantity of interest up to a point in time. If you plot this value, the value at a given point on the Integral curve corresponds to the area under the curve plotted for Each Time Step for the same quantity at the same point in the analysis.

The unit for an Integral measure is the unit of the measure quantity multiplied by time. For example, if the measure is velocity, with the unit m/sec, the unit for the integral measure would be m/sec * sec.