MAX
The MAX product appears on many European radars and is a presentation of the echo height and intensity in a single display based on a volume scan and calculated by first constructing a series of CAPPI’s to span the selectable layer, and then determining the maxima of reflectivities for the horizontal and vertical projections.
The horizontal maximum projection is calculated by taking the highest reflectivity
value in a specified layer over each pixel. The E–W maximum projection is
obtained by taking the maximum reflectivity for each pixel along the corresponding
N–S line. Likewise, the N–S maximum projection is obtained by taking the
maximum reflectivity along E–W line.