Highest Mountains of Io**
(only above 9 km height) ** Highest value of mountain height measured by any of the used methods (stereo, shadow, limb, twilight). The errors can be +/- 0,1--2,8 km depending on the resolution of the used image or the noise on the image in case of stereo measurements. In the case of shadow, limb and twilight measurements, this value is a minimum value because of the nature of the measurement; the real value may be higher. Using Stereo images the values were measured automatically while the in the case of the other 3 methods the values were measured manually. NOTE that we used 4 different methods measuring the heights of mountains.