22 floor indoor should be more like a 1-3 dBi with line of sight obstructions taller building around) Mid 5 - 7 if you are one of the more taller buildings or outside. If you are on the tallest building go closer toward a 9dBI. It all has to do with the spread of the signal. Low gain have a signal spread of a sphere. Mid have about a 45 degree angle spread and High gain are more like a spot light narrow spread 30 degrees
Thanks for the info👍
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