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 c16cf74c..5e65910d 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	
@@ -20,3 +20,19 @@ February 11th, 18:04
 
 Background count 56 2 minutes - 0.48 
 
+60Co Source is going in!
+
+| Amount Lead mg/cm^2 | 2 Minute Count |
+| ------------------- | -------------- |
+| 0                   |                |
+| 1120                |                |
+| 2066                |                |
+| 3448                |                |
+| 7367                |                |
+| 2000+3000           |                |
+| 3000+7000           |                |
+| 2000+3000+7000      |                |
+| 2x 7k               |                |
+| 2x 7k +1k           |                |
+
+