Arithmetic, geometric (metric units), and logarithmic (phi units).
Assessing grain size in coastal zones to mitigate erosion and flood risks. gradistat v 91 hot
Gradistat has evolved from its original 2001 release to Kenneth Pye Associates Ltd's later updates like , which was optimized for Excel 2007–2010. While a fully revised version known as GRADISTAT-PRO is under development, researchers continue to rely on the robust statistical frameworks provided by Version 9.1. geometric (metric units)