![](https://cdn6.bigcommerce.com/s-n3b7y2xkbc/product_images/uploaded_images/chart2.jpg)
- GPM: Gallons Per Minute
- GPA: Gallons Per Acre
- mph: Miles Per Hour
- W: Nozzle spacing (in inches) for broadcast sprayin
- Spray width (in inches) for single nozzle, band spraying or boomless spraying.
- Row spacing (in inches) divided by the number of nozzles per row for directed spraying.