diff --git a/src/View/Results/Window.py b/src/View/Results/Window.py
index c2a17f25..0004152c 100644
--- a/src/View/Results/Window.py
+++ b/src/View/Results/Window.py
@@ -1249,6 +1249,13 @@ class ResultsWindow(PamhyrWindow):
             return
 
         sep = " "
+
+        def is_float(string):
+            if string.replace(".", "").isnumeric():
+                return True
+            else:
+                return False
+
         with open(filename, 'r', newline='') as f:
             lines = f.readlines()
             x = []
@@ -1257,11 +1264,9 @@ class ResultsWindow(PamhyrWindow):
                 if line[0] != "*" and line[0] != "#" and line[0] != "$":
                     row = line.split(sep)
                     if len(row) >= 2:
-                        try:
+                        if is_float(row[0]) and is_float(row[1]):
                             x.append(float(row[0]))
                             y.append(float(row[1]))
-                        except:
-                            pass
 
         data_type_lst = ['Q(t)', 'Z(t)', 'Z(x)']
         data_type, ok = QInputDialog.getItem(