Small office Sunday

Today my office has 76 parcels which is very low for our city. I can easily make parcels per hour when the load is heavy because it is split into routes and you are delivering one route. My supervisor expects the same parcels per hour when I’m now doing the same amount of parcels but for the entire city. How can I explain to her that there is much more drive time between stops? It bothers me that this isn’t common sense.

Update: Supe followed me all day. At least she gets it now.