Notation	Name	Description	Status
0	Less than 1° of latitude		stable
1	1° to less than 2° of latitude		stable
2	2° to less than 3° of latitude		stable
3	3° to less than 4° of latitude		stable
4	4° to less than 5° of latitude		stable
5	5° to less than 6° of latitude		stable
6	6° to less than 7° of latitude		stable
7	7° to less than 8° of latitude		stable
8	8° to less than 9° of latitude		stable
9	9° of latitude or more		stable
10	Undetermined		stable
15	Missing value		stable