Pivot table missing column
 

Hi, I need help here on Pivot table. I run the pivot table on a big report
with 12 months display, I always missing one month data and don't know why's
that. I attached part of the report for example to show the problem I am
running into--you will see there is no October data although I covered it
into the pivot table format. Please give any suggestions on that. Thanks a
lot in advance!

08/01/2009 09/01/2009 10/01/2009
219 256
72 68
47 59
66 50
21 38
40 36
24 35
4 34
36 32
12 32