The figure shows three distance observations $D_1$, $D_2$ and $D_3$. The table lists values of these observations and the corresponding weights. Assuming uncorrelated observations, the most probable values by the least squares approach for these measurements are ............................. (Rounded off to 3 decimal places). \[ \begin{array}{|c|c|c|} \hline \text{Distance} & \text{Measurement (m)} & \text{Weight} \\ \hline D_1 & 40.150 & 1 \\ \hline D_2 & 40.180 & 2 \\ \hline D_3 & 80.390 & 1 \\ \hline \end{array} \]
