Lab3.markdown

@@ -71,7 +71,8 @@
 > ![P1](http://gitlab.au.dk/uploads/group-22/lego/62d5a5f655/P1.png)
 >
 > Fig. 1: Picture of the setup. The robot was placed on a table and the phone was pointed towards the robot. After
-> each sensor reading the distance to the phone was increased.
+> each sensor reading the distance to the phone was increased. The distance was not 100% accurate, but an
+> approximation.
 >
 > | Distance (approx metres) | Sensor Reading (dB) |
 > | -------- | -------- |