Name	Notation	Description	Types	Status
Increasing, then decreasing; atmospheric pressure the same or higher than three hours ago	0		Concept	stable
Increasing, then steady; or increasing, then increasing more slowly	1		Concept	stable
Increasing (steadily or unsteadily)	2		Concept	stable
Decreasing or steady, then increasing; or increasing, then increasing more rapidly	3		Concept	stable
Steady; atmospheric pressure the same as three hours ago	4		Concept	stable
Decreasing, then increasing; atmospheric pressure the same or lower than three hours ago	5		Concept	stable
Decreasing, then steady; or decreasing, then decreasing more slowly	6		Concept	stable
Decreasing (steadily or unsteadily)	7		Concept	stable
Steady or increasing, then decreasing; or decreasing, then decreasing more rapidly	8		Concept	stable
Missing value	15		Concept	stable