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Category geom_angle 
Category Description
Data items in the GEOM_ANGLE category record details about the
bond angles as calculated from the contents
of the ATOM, CELL and SYMMETRY data.
Category Examples 
Example 1:
Example 1 - based on data set TOZ of Willis, Beckwith & Tozer
[Acta Cryst. (1991), C47, 2276-2277].
loop_
_geom_angle.atom_site_id_1
_geom_angle.atom_site_id_2
_geom_angle.atom_site_id_3
_geom_angle.value
_geom_angle.value_esd
_geom_angle.site_symmetry_1
_geom_angle.site_symmetry_2
_geom_angle.site_symmetry_3
_geom_angle.publ_flag
C2 O1 C5 111.6 0.2 1_555 1_555 1_555 yes
O1 C2 C3 110.9 0.2 1_555 1_555 1_555 yes
O1 C2 O21 122.2 0.3 1_555 1_555 1_555 yes
C3 C2 O21 127.0 0.3 1_555 1_555 1_555 yes
C2 C3 N4 101.3 0.2 1_555 1_555 1_555 yes
C2 C3 C31 111.3 0.2 1_555 1_555 1_555 yes
C2 C3 H3 107 1 1_555 1_555 1_555 no
N4 C3 C31 116.7 0.2 1_555 1_555 1_555 yes
# - - - - data truncated for brevity - - - -
Key Category Items 
Items in Category geom_angle