Just for the sake of producing an answer in this thread, I'll say that I'm probably a 6. I'm a de-facto atheist in the sense that deities don't play any role in my daily life.
But I agree with earlier posts that this doesn't have much to do with my estimate of the probability of a deity existing. That's going to be something that beings like ourselves might have little ability to estimate.
And a great deal depends on how we conceive of the deity. If 'God' means the figure who features so prominently in Judeo-Christian and Islamic tradition, then I just have a hard time believing that the ultimate principle of the universe and being itself would behave in such a way. So I kind of intuitively assign a very low probability to the deities of the monotheistic traditions. That's where I consider myself a 6.
But... if we conceive of 'God' as whatever fulfills the set of metaphysical functions traditionally referred to by natural theology, first-cause, source of cosmic order (the laws of physics), ground-of-being, and ultimately the reason why there is something rather than nothing, I have to admit that I don't have a clue what the answer to those questions might be, or even whether expecting an answer makes sense. (There may be problems of circularity when we seek an explanation for everything.) So I might be more of a 4 when it comes to natural theology.
I guess that I think of myself as an agnostic in Thomas Huxley's original sense.