It's quite a wide margin; isn't it. I'd hope toward the top end of either range. I know it doesn't mean much, but it has been commented ,that my line is as good as it gets, since I revamped with a SSFP and moved the test socket. The ex BT man who did the work said he found no external fault too.
It's all FWW, but unless there's something nasty twixt DP and me, I'd hope for a good outcome.