Dihedral coordinate ABF scheme

From: Luca (bellucci14_at_unisi.it)
Date: Tue Jan 29 2008 - 15:32:01 CST

Dear all,
I used new "dihedral angle coordinate"
in ABF scheme calculation.
 I have a classic tosional angle like O-C-C-C.
I obtain these data:
# xi A(xi) av_force n_samples
    -177.500 0.0000 -0.0630 5334
    -172.500 0.3775 -0.0880 4893
.....................................................................................
     172.500 5.6252 0.0136 5157
     177.500 5.6894 -0.0393 5090

How to comment these data. Why it does not have periodicity?
Do I have sampling problem?

Thanks.

PS: Principal parameter in ABF section
abf coordinate dihedral
abf abf1 {5202 5203 5204 5205}
abf dxi 5.0
abf dSmooth 0.3
abf fullSamples 500

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