Hi, I have a dataset of this size: I=1:4 J=1:4 L=1:428 and I want to standardize the region in order to calculate EOF's and I don't know exactly how to perform this within Ferret. I have performed the calculus of the anomalies but don't know how to divide the region by its standard deviation. Any help will be appreciated Cheers, Antonio Rodríguez CICEM Agua del Pino Huelva, Spain