Table 2.
Monthly profile of number of dust storm days, in addition to the average and standard deviation of PM10 measurements in Ahvaz between 2009 and 2014.
| Month | # dust storm days |
% of dust storm days in month |
PM10 average (µg m−3) |
PM10 Std. Deviation |
|---|---|---|---|---|
| January | 23 | 12.4 | 439.9 | 237.7 |
| February | 51 | 30.2 | 586.2 | 518.5 |
| March | 77 | 41.4 | 466.2 | 477.8 |
| April | 63 | 35.0 | 507.5 | 1233.9 |
| May | 75 | 40.3 | 392.6 | 279.3 |
| June | 105 | 58.3 | 546.2 | 800.0 |
| July | 110 | 59.1 | 610 | 722.8 |
| August | 71 | 38.2 | 376.3 | 207.1 |
| September | 56 | 31.1 | 370.7 | 482.2 |
| October | 66 | 35.5 | 295.7 | 107.4 |
| November | 39 | 21.7 | 411.2 | 261.8 |
| December | 44 | 23.7 | 483.1 | 536.9 |