122 may alternatively directly assign assets to heat range categories instead of generating a standard deviation normal distribution next in step 124 the first asset in the asset list is set as an index asset and in step 126 the index asset is assigned to a new cluster which is added to a cluster list at step 128 unclustered assets within a pixel distance of the index asset are assigned to the cluster of step 126 the process then checks to see if all assets have been assigned to a cluster in step 130 if all assets have not been assigned the process sets the next unassigned asset in the list as an index asset in step 132 and returns to step 126 if all assets have been assigned at check 130 the process continues by setting the first cluster in the cluster list as an index cluster at step 134 then in step 136 assets in the index cluster are assigned to new clusters based on the assets 39 assigned heat categories these new clusters are comprised of a subset of the assets that are assigned to the cluster in step 128 that all lie within the pixel distance of the index asset of that step but they are now divided into new clusters that contain only those assets that have the same heat index categorization these new clusters are.