I'm doing EBSD analysis on a same area after ECSTM analysis to define any diffrences that could explain dissimilarity behavior between two grains boundaries of a same type.

The EBSD data include sigma degree (CSL or not), misorientation and GBs plan. but also a parameter called deviation and two athers called plan(P1) and plan(P2), exemple:

GB1: sigma=3, misorientation=58.7, plan=-18 17 17, deviation=1.7, plan(P1)= 10 -21 -12, plan(P2)= -10 -9 4. 

I would like to know what means deviation and if plan(P1) and plan(P2) are the real plans of the two cristals from either sides of the GB.

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