What is the width of the valleys of colonies which corallites are associated?
Measure the mean distance between walls of the valleys, taking into account thewall.
For widths at the boundary between two states, validate these two states.
Carefull: the value is not applicable for monocentric corallites.
Monocentric and/or pluricentric corallites? | |_ Width of corallite series (pluricentric corallites)