F&SF: 5%
Analog: 5%
Asimov's: 20%
Baen's Universe: 21%
Intergalactic Medicine Show: 32%
Interzone: 40%
Realms of Fantasy: 51%
Clarkesworld: 61%
Strange Horizons: 68%
Weird Tales: 72%
Chizine: 78%
Cosmos: 80%
Fantasy Magazine: 88%

I offer no great conclusions with these results . . . apart that FM might have too many "new" authors. In any case, business models are different between magazines, and "new" authors might not be a part of that model. For those that care, the initial basis for "new" was applying Campbell eligibility structure, as a starting point, and anyone exceeding that was no longer considered "new." This seemed the easiest, simpliest way to break this down. If anyone has any questions please let me know.