Braking Action Matrix used by Ryanair
 

Some weeks back, a colleague heard a Ryanair pilot on the radio at EGNM when there was some contamination on the runway refer to a 'table' used to determine braking action from the contaminant type and depth info provided from the airport on the ATIS. Can any Ryanair pilots tell me where I might find this table as I would be interested to see if it might be useful to forward to my own company to consider? Thanking you in advance for your help
Regards

Possibly the TALPA runway conditions assesment chart.

http://www.skybrary.aero/bookshelf/books/1508.pdf