"It takes months sometimes to compile the information, because one of the biggest problems in the affected areas is the lack of precision and uncertainty at the scene, " Rosende said.
That is the limit imposed by Heisenberg's famous uncertainty principle (which states that the precision of a time measurement is limited by the precision of a corresponding energy measurement).
In science, the Uncertainty Principle says that you cannot precisely measure anything past a certain level of precision because the mere act of observing distorts the object of the measurement.