Hello, I hope someone can help me.
I have processed MODIS L2 (chll-a,  adg, aph, bbp) to L3bin monthly. I would like now to get the "coefficient of variation", which is obtained from dividing, for each monthly pixel, the standard deviation for the mean. The problem is that I don't know how to do it, since I can't use SEADAS. And also I would like to have result maps of the coefficient of variation. Anyone has any idea of how to do it?

Is the problem that you do not know how in SeaDAS to do this, or that you cannot use SeaDAS?
If the former, use the 'User-Defined Band Operations'

Sean

The l3-binned format supports mean and variance calculations, but median is not readily available (see $SEADAS/build/src/libsdsbin/stat_calculate.c for details).  Loading l3 binned data in the SeaDAS GUI requires a map projection, so make it a bit tricky if you want values for particular bin.  If the OP wants bin-by-bin results, /build/src/l3bindum/l3bindump.c  can be modified to compute the mean, variance, and standard deviation, or the IDL code from http://oceancolor.gsfc.nasa.gov/cgi/idllibrary.cgi can be used.