diff --git a/slides/sections/8.md b/slides/sections/8.md
index 5291eba..21dc614 100644
--- a/slides/sections/8.md
+++ b/slides/sections/8.md
@@ -133,12 +133,17 @@ $$
 \begin{center}
 \begin{tikzpicture}[>=Stealth, overlay]
   % Rectangles
-  \draw <2>     [gray, very thick] (-1.4,0.3) rectangle (0.4,5.5);
-  \draw <3>     [gray, very thick] (0.4,0.3)  rectangle (2,5.5);
-  \draw <4,5,6> [gray, very thick] (2,0.3)    rectangle (3.8,5.5);
-  \node <5>     at (-2,2.5) {\includegraphics{images/gamo-pdf.pdf}};
-  \node <6>     at (-2,2.5) {\includegraphics{images/gala-pdf.pdf}};
-  \draw <5,6>   [thick] (-5.15,0) rectangle (1.22,5.05);
+  \draw <2,3>   [gray, very thick] (-1.4,0.3) rectangle (0.4,5.5);
+  \draw <4>     [gray, very thick] (0.4,0.3)  rectangle (2,5.5);
+  \draw <5,6,7> [gray, very thick] (2,0.3)    rectangle (3.8,5.5);
+  \node <6>     at (-2,2.5) {\includegraphics{images/gamo-pdf.pdf}};
+  \node <7>     at (-2,2.5) {\includegraphics{images/gala-pdf.pdf}};
+  \draw <6,7>   [thick] (-5.15,0) rectangle (1.22,5.05);
+  % Estimations notes
+  \draw <3> [fill=white] (1,2.6) rectangle (3.4,3.9);
+  \node <3> [above right, align=right] at (1,2.6) {
+    $m_M = 0.658...$\\
+    $m_L = 1.355...$};
 \end{tikzpicture}
 \end{center}
 \setbeamercovered{transparent}