600.000 to 1.5M considering Alsace has 2M inhabitants
I don't know where you're getting these numbers from, but I doubt that the number of Alsatian speakers has proportionally grown much since 1999 (actually, the same article said Alsatian was on the lowering), anyhow, this is all the sites where Germanic speakers are over 50%. Also, keep in mind that 550k is the total speaker amount - native speakers are even less.
If you just want to listen to Juq, that's all right, but then your map will remain wrong and irrelevant particularly with the title you chose.
Actually, he specifically told me he wanted his map to be "wrong and irrelevant", so your job is done'ere.