The fact that they put "unreliable" behind all the frition numbers says a lot too........
In the UK, that's ALL that we're legally able to say, now. We mustn't even quote the numbers at all. This is partly because there is still no International agreement on
a) what all the different readings mean that different machines come up with on the same surface, or even the different readings you get on the same surface with the SAME machine on consecutive runs
b) the lack of correlation between a friction reading taken at 40MPH using a machine you can lift with one hand and the braking action of an a/c doing 100kt+ and massing 50tonnes or more.
This lack of progress has been going on for years and the UK CAA have finally said 'OK. you lot, until it's sorted out, no promulgation of friction readings to ATC or pilots'.
We're working for this winter on a 'back to black' principle and won't re-open following closure for snow removal until we're 'WET, WET' WET' or better.
It probably makes the publishing of a SNOWTAM irrelevant.
Cheers,
The Odd One