If you can discern something, you are aware of it and know what it is. You need a long series of data to be able to discern such a trend It was hard to discern why this was happening
detect with the senses; "The fleeing convicts were picked out of the darkness by the watchful prison guards"; "I can't make out the faces in this photograph"
Capable of being discerned by the eye or the understanding; as, a star is discernible by the eye; the identity of difference of ideas is discernible by the understanding
perceptible by the senses or intellect; "things happen in the earth and sky with no discernible cause"; "the newspaper reports no discernible progress in the negotiations"; "the skyline is easily discernible even at a distance of several miles"
capable of being seen or noticed; "a discernible change in attitude"; "a clearly evident erasure in the manuscript"; "an observable change in behavior"