بسم الله الرحمن الرحيم
(Fatwa: 1845/511/H=12/1434)
There is no issue if you performed salah with the difference of 6-7 degrees, neither it is necessary to repeat the salah. You should see the direction of the old mosques in your area and then arrange the rows in the room accordingly.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
