Only real reads so far was PFR (button) seemed fairly straigtfoward and the CO was a station.

5 Handed
Hero: $13.40
CO 6.90
Button: 14.15


Folded CO who limps, button raises 4x I call in BB with and CO (station) calls.

Flop:[9s]
I lead for 1/2 the pot as a "feeler" and called in both places. No idea what the station has but I thiink if it hit the button and I was out kicked he would've raised.

Turn I lead for half the pot again, and again called in both places.

River

Is this a spot to throw out any type of value bet, since nobody has shown any aggression? If I check and someone throws out say a 1/2 PSB do we call? OR is this a fold?