This is great. Be careful to use the right units in your calculation. To use the 96.25 factor, your measurement must be in gallons/minute divided by area in square ft. Multiplying that rate by 96.25 gives you inches per hr, which is the unit required for configuring a custom nozzle in the Rachio app. You can create a custom nozzle on the phone app by swiping the screen to the right or tapping on the 3-line icon upper left of iPhone screen. Then choose "Custom Nozzles". Label your nozzle something like "1.65 in/hr spray". Then go back to the front page swipe down to the "My Yard" banner and tap the zone you want to change. In the nozzle field, the new custom nozzle will show in the drop down list, and you can pick it. Also update the square footage field so that you can get a more accurate reading of gallons used. Good luck!