How to take frequent values from an array in matlab

I have an array of values l开发者_JAVA百科ets say:

a =

   77.0000   83.3400  131.9300  131.9300  109.0600   37.6800   76.7100  189.3300 

  443.5000  328.1500  343.6400  343.6400  272.6000  421.8600  393.7900  353.8400

Now I want to get frequent values from 1st row of this array like this:

b = [131.9300 131.9300]

and all other values that are near 131.

Try:

>> [val count] = mode( a(1,:) )
val =
       131.93
count =
     2