google webmaster tools is not showing correct data?

[Marlin Girl]

After google last update my webmaster is not showing correct data. its show my all keywords in top 10 , but the reality is not this. and many times i connect my webmaster to my analytic but not connected its show me SUCESS but not linked with webmaster. i am too worried how can i fix these problems

[Dev]

There are few things you've to remember.

1. Google webmaster is not shows 100% accurate data.
2. Google shows 30 days data. That mean when Google crawler visit, your website rank was high. But may be after few days it down.
3. Google work according to location. Maybe Google server and your location are different.

what to do?
Search keyword in "google.com"
after hit enter. type &gl=us at the end of address bar.
this will change the results. Try it