Passive RC Circuit Natural Response

The initial capacitor voltage and time constants are pictured on the left. We got t=0.392s when charging and t=0.242 when voltage is dissipated.
And the capacitor voltage is 3.43 V.

Here is a picture of our circuit, the actual values for the elements is pictured in the above image. For R1=.982 kOhm and R2=2.16 kOhm

Here is a picture when we discharge the capacitor. Our theoretical V for our capacitor was 3.43 V, our experimental was 3.441 V. So our %error was .32%, which is pretty close. For out t constant, our value was  .2817s when compared to our t constant .392s, we had an error of 28.1%error. I think our %error weren't thtat bad.

Here's a pic of when using a square wave. When disconnected our V value was  3.49V. The %error is 1.7% which is pretty good. I'm assuming leaking caused the error.

Our t constant was  about 80.91 ms. This was way off when compared to our t constant. In retrospect i realized our t constant was miscalculated. instead of  .242s it shoud've been RC5=75.62 ms. When our experimental is compared to our theoretical our %error was 7%, which is pretty close.