In step 4 all the individual results for each instance of an activity that is supplied by an individual and which can be reached from a location are combined using a harmonic series. Combining all these results from step 3 can yield results over 1.00, ie >100%. In step 3, if an activity destination was co-located with the trip origin, 100% of people would be considered to make the trip. Therefore the combined result can be interpreted as the number of co-located activity equivalents that are accessible from the origin, ie how many equivalent activities are supplied adjacent to the origin, in order to provide an equivalent accessibility to that which is supplied by the observed distribution of destinations. This value incorporates the decrease in activity patronage as travel time increases, as well as the diminishing return from each successive opportunity.
The results from later steps in the methodology (steps 5–7) all combine the results from step 4 using a simple relative weighting method and therefore the results can be interpreted in a similar manner. Note that a value of 1.0 is an effective equivalent value to the co-located provision of one set of all measured activities.