I have this kind and called the company on 7-15-08 for an expanation of how to read them. BTW I did not tell them what I was testing.
According to the company wait 15 seconds and then read. Try to match up both boxes but if they do not both match then go by the top one. This usually means it is between numbers she said.
That being said I think yours is a 6.25.
Due to this confusion, I am really looking into a digital tester. These strips (in my opinion) are too open to confusion and error.
Good luck.