diff --git a/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 5.md b/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 5.md
index 11cab5386..784dfb506 100644
--- a/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 5.md	
+++ b/300s School/NUCE 2113 - Radiation Detection and Measurement/Laboratory 5.md	
@@ -17,3 +17,6 @@ Exercise 5.7
 Best guess rubidium at 657.777 134 cA gross area 2507
 With Cs source now, gross area 6886
 background count gross area 81
+
+Range Table
+Hubert Binne