diff --git a/years/2023/logbook.html b/years/2023/logbook.html
index 355b80748..627df1cb4 100644
--- a/years/2023/logbook.html
+++ b/years/2023/logbook.html
@@ -57,37 +57,37 @@ rope left at bottom of 4th pitch
   </tr>
   <tr>
     <th>2022</th>
-    <th>15m</th>
+    <th>~15m</th>
     <th>blue and white</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2019</th>
-    <th>30m</th>
+    <th>~30m</th>
     <th>white and green</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2022</th>
-    <th>30m</th>
+    <th>~30m</th>
     <th>white (green and orange)</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2022</th>
-    <th>10m</th>
+    <th>~10m</th>
     <th>white(yellow)</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2019</th>
-    <th>5m</th>
+    <th>~5m</th>
     <th>white and green</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2019</th>
-    <th>20m</th>
+    <th>~20m</th>
     <th>white and green</th>
     <th>9mm</th>
   </tr>
@@ -99,37 +99,37 @@ rope left at bottom of 4th pitch
   </tr>
   <tr>
     <th>2018</th>
-    <th>30m</th>
+    <th>~30m</th>
     <th>green(black)</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2022</th>
-    <th>10m</th>
+    <th>~10m</th>
     <th>blue and white</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2022</th>
-    <th>10m</th>
+    <th>~10m</th>
     <th>blue and white</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2019</th>
-    <th>80m</th>
+    <th>~80m</th>
     <th>white and green</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2018</th>
-    <th>15m</th>
+    <th>~15m</th>
     <th>green(black)</th>
     <th>9mm</th>
   </tr>
   <tr>
     <th>2019</th>
-    <th>20m</th>
+    <th>~20m</th>
     <th>white and green</th>
     <th>9mm</th>
   </tr>