Maybe I'm blind and missed it, but does anybody have a chart that shows the approximate PPH of nitrous used per HP setting? For example, 100 PPH = XX hp? I just want it for a reference to keep in my trailer...I weigh the bottles before and after a pass, and change every pass, but just want something to refer back to for usage...Also to help me estimate how much I'm going to go through at a given event.....