Months | Seasons | POI/Seasons | POI/months | Color | Organic pollution level |
December | LDS | 2.75 | 2 | Yellow and brown | Pollution is moderate to high |
January | 3.25 | ||||
February | 3.25 | ||||
March | SRS | 2.25 | 1.75 | Brown and red | Pollution is high to very high |
April | 2 | ||||
May | 2.75 | ||||
June | 2.5 | ||||
July | SDS | 2.25 | 2.5 | Brown | High pollution |
August | LRS | 2.75 | 2.5 | Yellow and brown | Pollution is moderate to high |
September | 2.5 | ||||
October | 2.25 | ||||
November | 3 |