diff --git a/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 1.md b/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 1.md
index 42e6bb19..fd9f2ee0 100644
--- a/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 1.md	
+++ b/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 1.md	
@@ -14,8 +14,10 @@ Exercise 1.3
 
 | Attenuation | Voltage |
 | ----------- | ------- |
-| 1000/1000   | 5.38V   |
-| 800/1000    | 4.32V   |
-| 600/1000    | 3.22V   |
-| 400/1000    |         |
-| 200/1000    |         |
\ No newline at end of file
+| 1000/1000   | 5.44V   |
+| 800/1000    | 4.42V   |
+| 600/1000    | 3.38V   |
+| 400/1000    | 2.30V   |
+| 200/1000    | 1.24V   |
+
+- [ ] Do exercise 1.4 where we make a linear relationsihp of above data