Checking the server logs this is what it recorded for enriched ores when it came up.
CRefiningPercentage.cpp(235) [2018-04-05 13:27:03.968] refining rate tbl(advance or cash)
CRefiningPercentage.cpp(224) [2018-04-05 13:27:03.968] 0 ItemLevel,100,100,100,100, 90, 70, 70, 40, 40, 20, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5
CRefiningPercentage.cpp(224) [2018-04-05 13:27:03.969] 1 ItemLevel,100,100,100,100,100,100,100, 90, 70, 30, 18, 18, 18, 18, 18, 17, 17, 17, 15, 15
CRefiningPercentage.cpp(224) [2018-04-05 13:27:03.969] 2 ItemLevel,100,100,100,100,100,100, 90, 70, 40, 30, 18, 18, 18, 18, 18, 17, 17, 17, 15, 15
CRefiningPercentage.cpp(224) [2018-04-05 13:27:03.969] 3 ItemLevel,100,100,100,100,100, 90, 80, 40, 40, 30, 18, 18, 18, 18, 18, 17, 17, 17, 15, 15
CRefiningPercentage.cpp(224) [2018-04-05 13:27:03.969] 4 ItemLevel,100,100,100,100, 90, 70, 70, 40, 40, 20, 8, 8, 8, 8, 8, 7, 7, 7, 5, 5
These rates match our published refining rates.
So it means upgrading armor/lvl 4 weapon from +9-10 has 20% chance of success? I’ve been fooled. I though it was 8%