Day and night also has a strong effect on weak signal strength.
Sun Rise and Sun Set also has a strong effect on Tv reception.
A wire screen covering the reflector rods of the 8 bay will deflect more signal at the back of the 8 bay.
And increase forward gain.
Stucko wire , aka , chicken wire .
Also.
A 8 bay antenna has about the same reception on the sides as long yagi.
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At Distance and etc. , Tv transmissions tend to rotate out of the horizontal polerized plane.
8 bays , that have the >< shaped reception elements , tend to receive transmissions that have rotated out of the horizontal polerized plane.
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And some Tv stations transmit a Circular Polerized and or Eliptical Polerized signal.
www.rabbitears.info , has a list of stations.