The group of Tv stations to the north west at about 322 magnetic compass are the ones you are receiving. To get more reception with a indoor Tv antenna , one needs to get the antenna to window that is in the direction of the Tv stations and preferably on a second floor or higher. If you still do not receive the channels you will like then you will need to install a roof top Tv antenna. The channels/stations are in the VHF High channels 7 thru 13 and UHF channels 14 thru 69. So the roof top Tv antenna is a Winegard HD7694P. Here is how to aim Tv antennas .
http://www.kyes.com/antenna/pointing/pointing.html . Some people have installed a roof top antenna on the inside of the house , pointing it out the window or hang it from the ceileing. Big antennas collect more signal and can work on the inside of the house. However the best place for roof top outside Tv antenna is - you guessed it - is outside up high . DO NOT use a amplifier with the HD7694P or any outdoor antenna , the Tv signals at your location are plenty strong and might over load a antenna amplifier.