Macromolecular dictionary (mmCIF) version 2.0.09
The 2D Cartesian y coordinate of the position of this atom in a recognizable chemical diagram. The coordinate origin is at the lower left corner, the x axis is horizontal and the y axis is vertical. The coordinates must lie in the range 0.0 to 1.0. These coordinates can be obtained from projections of a suitable uncluttered view of the molecular structure.
Mandatory item: noAlias:
_chemical_conn_atom_display_y (cif_core.dic version 2.0.1)
The permitted range is [0.0, 1.0]