| Value | Category |
|---|---|
| 1 | No, main source is used solely all year |
| 2 | Yes, used in conjunction with main source |
| 3 | Yes, used when main source is not usable. |
The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations (FAO) concerning the legal or development status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.