@rickandersonaia, are these all low flow emitters? i.e. micro spray & drip emitters. Or are they a mix of high flow emitters? i.e. bubbler & soaker hose
Sounds like your drip lines were designed properly. A drip line should be designed with the water requirements of the plants in mind if the vegetation is mixed; i.e. trees, shrubs and perennials.
Mixed vegetation and nozzles makes scheduling difficult as the Iro uses the precip rate of the nozzle and the vegetation type to calculate the run time of each zone. Assuming these are mixed, you’ll need to override the recommended schedule to match the output of the emitters with the water requirements of the vegetation.
As for calculations, we might be able to accomplish better reporting by calculating the average precipitation rate of all your emitters.
Please keep in mind, the Iro’s reporting is only an estimated usage/savings – for details on how the gallons are calculated, please refer to this support article.
Hope this helps. Happy to help you calculate the average precip rate for the emitters if needed.