reviewing play, "BBwon/hand"

[someday]

sb (0.4)-(0.7)
bb (0.13)-(0.17)

From what i can gather from some of the posts on blind play, these seem to be generally accepted as decent winrates.

What are regarded as a target "BBwon/hand" winrates for the other 4 positions?

These are mine at 2-4, just over 48k hands.
SB....... (0.09)
BB....... (0.14)
UTG...... 0.14
UTG+1...0.08
CO....... 0.07
BT....... 0.14

Is this a viable way to rate anyones play over such a small sample of hands?