The electrical conductance readings of the same vegetables also vary pronouncedly in the literature. For example, the electric conductance of potato can be 0.037 S/m, 0.06 S/m, or 0.32 S/m, and carrot can be 0.041 S/m or 0.13 S/m. As mentioned before, other than the difference in the composition of the test samples and the methodology used, the direction for taking measurements may also be a contributing factor to the variation