Yelling scale

I wouldn't say I have really yelled since starting but I have gotten louder then I would like. Since there is a blurred line it has been hard to tell if I have been successful or not so I think a scale of sorts might be helpful.

So on a scale from 1-10,
1 - whisper
2 - soft talking
3 - normal inside talking
4 - normal outside or enthusiastic talking
5 - trying to be heard in a loud room
6 - yelling (trying to be heard in another room level)
7 - Why aren't you listening I have said it 10 times!!
8 - Throat hurts
9 - I don't know I haven't gotten there.
10 is vein popping.

So with this in mind I have probably gotten to a 7 before this experiment, 5 since starting and I think I would like no more than a 4.