Tried to sum up my question in the title... What I’m trying to ask is, does a microphones polar pattern exist on a horizontal plane like a standard diagram would indicate, or is it spherical in the real world? I am wondering because I’ve been using some ribbon mics on guitar this weekend in the Blumlein technique to mic up my acoustic while rejecting my voice down the middle. I’m curious if the null points in a figure of 8 apply to the top & bottom to the mic and not just the sides. Testing this out I found that to be the case. Just curious if anyone can say definitely one way or another, as it’s been difficult to find anything about this online.