@property<EOL><INDENT>def yunit(self):<DEDENT>
try:<EOL><INDENT>return self._dy.unit<EOL><DEDENT>except AttributeError:<EOL><INDENT>try:<EOL><INDENT>return self._y0.unit<EOL><DEDENT>except AttributeError:<EOL><INDENT>return self._default_yunit<EOL><DEDENT><DEDENT>
Unit of Y-axis index

        :type: `~astropy.units.Unit`