Histogram are better to see the repartitions of values, and can hint you on a n-modal behaviour. (a «mode» when everything goes well, and a degraded one for instance which can hint on a potential transition of behavior).
I guess the next step is to say this is even more important to know the evolution over time and announce that the equivalent of spectrogram (3D mapped on 2D plus colour) is a good idea to known towards which mode you are tending the more. [EDIT: which can also more significantly graphed as spectrum analysis, colour encoding the amplitude of measure for a given frequency, and frequency being 1/Period thus making sure that slow processes may appear between 0 and average]
A shortcut is to hire of of the many jobless guys with a master in science that actually have experience in labs.
Beware that for a reason that is beyond my reach, people with background in math, management, literature have problems with scientific concepts that has been discovered after 1800 unless it is packaged like magic.