A dam on a river holds water in its reservoir to generate electricity. Because the dam is in a rainforest area, the flow of water is highly uncertain. In December last year, the overflow from the reservoir (in million cubic meters) on 14 different days was

\[ \begin{array}{lllllll} 26 & 24 & 25.5& 23.5& 25.5& 23 & 23 \\ 24 & 25 & 24 & 26 & 23.5& 25 & 20\end{array}\]

Display the data in a dot diagram.