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Yes, this is a table of values. Yes, it may not immediately make sense. Stick with me though.
These are relative "power" levels compared between kite size (in square meters) and wind speeds (doesn't matter if knots or mph, so long as you're consistent).
Several interesting things we can deduce from this.
For instance I want to figure out what my next quiver step size should be. Most of us know this through experience (read, trial and error) already but look how it breaks down. Say you wanted to work backwards from your largest kite size. For this example, I'll say it's a 16m kite. Let's arbitrarily set our step size to 75%. I want my 16m kite to have 75% more power than my next smallest kite. Looking at the 16 column, and the 12 row, I see that a 16m kite has 178% the power of a 12m kite. Great, so my first two kites are a 16m and a 12m. What's my next smallest after that? Looking at the 12 column, and the 9 row, a 12m kite has 178% the power of a 9m kite. So I'd buy a 9m, 12m, and 16m if I wanted to stay consistent. (further going down the chain would be a 7m). Obviously you can increase this to 100% and just say each kite size should be double the power (17, 12, 8 )
Let's use it a different way. Say I know that for my ability, riding style, and body weight, I really like riding a 9m kite in 28 mph because I feel powered up. To keep that power level in 20 mph winds, what kite size should I be on?
Looking at the lower table, the 28 column and the 20 row, we see that 28 mph is 274% of the power of 20 mph. So we need to make sure that whatever our larger kite size is, has roughly 274% of the power of our 9m. Going back up to the top table, we see that a 15m kite is 278% the power of a 9m. Strictly talking wind and kite size, you'd want to size up to a 15m kite in 20mph winds to maintain the same level of power you had with a 9m in 28 mph winds.
Yes, there's apparent wind, projected area, diminishing returns, etc. etc. however, this should be a good guide.