This is a compilation of published detonation velocities for various high explosive compounds.
It is a key, directly measurable indicator of explosive performance, but depends on density which must always be specified, and may be too low if the test charge diameter is not large enough.
Especially for little studied explosives there may be divergent published values due to charge diameter issues.
In liquid explosives, like nitroglycerin, there may be two detonation velocities, one much higher than the other.
The pressure can be calculated using Chapman-Jouguet theory from the velocity and density.