After measuring daily for about two months with such a scale (in the mornings after going to the toilet and before drinking anything, so I assume my hydration s

After measuring daily for about two months with such a scale (in the mornings after going to the toilet and before drinking anything, so I assume my hydration should be somewhat consistent) I see a clear downward trend (in line with my weight loss), but the actual values that are measured don’t seem to be very exact, probably about ±3% around the imaginary trend line. Those measurements seem to be good for finding a trend, but not for finding the absolute value.