An analysis of a Klingon weapon signature
Hadrons were a type of subatomic particle made up of quarks and were subject to strong forces.
The results of the hadron count made during the weapons analysis, made by Malcolm Reed of the the debris of a Rigelian freighter that was discovered by Enterprise in late 2154, determined that the hadron concentration in the area was 147 ppm. This was one of the indicators that confirmed a Klingon weapon signature. (ENT: "Affliction" display readout)