diff --git a/constants/74a.md b/constants/74a.md
index f1e5dba..be83ed8 100644
--- a/constants/74a.md
+++ b/constants/74a.md
@@ -20,7 +20,7 @@ $$
 $$
 where “nef” means having nonnegative intersection with every effective curve on $X$. <a href="#HR2009-nef-alt">[HR2009-nef-alt]</a>
 
-The best established range in the references below is
+The tabulated lower bounds increase as $4/13 < 177/560 < 55/174 < 117/370$. The best established range in the references below is
 $$
 \frac{117}{370}\ \le\ C_{74}\ =\ \varepsilon_{10}\ \le\ \frac{1}{\sqrt{10}}.
 $$
@@ -38,10 +38,13 @@ $$
 | ----- | --------- | -------- |
 | $\frac{4}{13}$ | [[Eck2008](#Eck2008)] | Lower bound for $10$ general points on $\mathbb{P}^2$ obtained by the asymptotic Dumnicki method. <a href="#Eck2008-lb-4-13">[Eck2008-lb-4-13]</a> |
 | $\frac{177}{560}$ | [[HR2009](#HR2009)] | Obtained by proving that $(560/177)L-(E_1+\cdots+E_{10})$ is nef. <a href="#HR2009-lb-177-560">[HR2009-lb-177-560]</a> |
-| $\frac{117}{370}$ | [[Eck2011](#Eck2011)] | Eckl’s improvement on the earlier $55/174$ bound. <a href="#Eck2011-lb-117-370">[Eck2011-lb-117-370]</a> |
+| $\frac{55}{174}$ | [[Eck2011](#Eck2011)] | Intermediate lower bound, later improved to $117/370$. |
+| $\frac{117}{370}$ | [[Eck2011](#Eck2011)] | Eckl’s improvement on the earlier $55/174$ bound. Record among the tabulated lower bounds. <a href="#Eck2011-lb-117-370">[Eck2011-lb-117-370]</a> |
 
 ## Additional comments and links
 
+- **Historical 55/174 bound.** The $55/174$ row is the intermediate Eckl bound cited in the $117/370$ comment, omitted from the table previously.
+
 - **Conjectural value.** For $r=10$, Nagata predicts the maximal value
   $$
   \varepsilon_{10}\ =\ \frac{1}{\sqrt{10}},