why national processing times are different from USCIS nebrasaka center time?

akanshauxa

Registered Users (C)
My labour certification has been cleared and my I-140 has been filed in july 14th from nebraska service center .I am currently in wyoming .so my USCIS service center should be denver.here I was going through the forum (Green card process)& there is a link in the question no. 41. when I clicked on the link ,I reached on Processing Times and Status Checks .there I went on National Processing Times - I-485/EAD/AP.& checked Denver which shows 240days for Permanent Residence Filing until apporval I-485 .& if i go to USCIS Nebraska Center it shows Feb 01 2002.Please let me know what is the difference in both.& which one I should follow to know the status of my I-485.
please I 'll really appreciate if you help me out in it .
Thanks a lot
 
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