Y

Name	Kind	Description
	class instance	A rate of change of angle of rotation of a thing about its normal axis, measured in degrees per second.
	class instance	An angle of rotation of a thing about its normal axis, relative to its direction of motion, measured in degrees; negative values indicate rotation to the left.
	class instance	A description of the second dimension's data.
	class instance	A year.
	class instance	A year and month.
	class instance	A value (and optionally, the 1-sigma absolute uncertainty of this value), of the second dimension of an equation.