diff --git a/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 4.md b/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 4.md
index 8e0578356..386fc77d0 100644
--- a/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 4.md	
+++ b/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 4.md	
@@ -33,7 +33,7 @@ Background count 56 2 minutes - 0.48
 | 1k + 3k             |                |
 | 2000+3000           |                |
 | 3000+7000           |                |
-| 2000+7000           |                |
+| 2000+7000           | 357            |
 | 2x 7k               | 290            |
 | 2x 7k +1k           |                |