| Seasons |
Months |
2010 |
2011 |
| Station I |
Station II |
Station I |
Station II |
| Post monsoon |
January |
4.6 |
4.6 |
4.6 |
4.9 |
| February |
4.5 |
4.5 |
4.5 |
4.5 |
| March |
4.3 |
4.4 |
4.4 |
4.5 |
| Summer |
April |
4.1 |
3.6 |
4.1 |
4.4 |
| May |
4.0 |
3.7 |
4.0 |
4.2 |
| June |
3.8 |
3.8 |
3.9 |
4.1 |
| Pre monsoon |
July |
3.9 |
4.0 |
4.3 |
3.9 |
| August |
4.0 |
4.3 |
4.2 |
4.5 |
| September |
4.1 |
4.2 |
4.2 |
3.9 |
| Monsoon |
October |
4.3 |
4.3 |
4.2 |
4.2 |
| November |
4.4 |
4.2 |
4.2 |
4.4 |
| December |
4.5 |
4.9 |
4.5 |
4.7 |
|
