@SBelin, don’t overthink it. Precipitation is measured in in/hr, so yes, you just need to enter that value into the zone advanced section. In this case .45" is correct. You could make the case that you are trying to find an average precipitation rate if you have multiple arcs (90, 180, 360 degree) in your system. If you really want to dial in your precipitation rate, you need to do a catch cup test because in real life, you may have more or less overlap than ideal, giving you a higher or lower PR than a chart might show.
