diff --git a/evaluation_examples/data/origin/example.xlsx b/evaluation_examples/data/origin/example.xlsx
new file mode 100644
index 0000000..26a7e6b
Binary files /dev/null and b/evaluation_examples/data/origin/example.xlsx differ
diff --git a/evaluation_examples/data/origin/test.csv b/evaluation_examples/data/origin/test.csv
new file mode 100644
index 0000000..ffa9395
--- /dev/null
+++ b/evaluation_examples/data/origin/test.csv
@@ -0,0 +1,6 @@
+Y\X,10,20,30,40,50
+5,0.1,0.2,0.3,0.4,0.5
+10,0.2,0.4,0.6,0.8,1.0
+15,0.3,0.6,0.9,1.2,1.5
+20,0.4,0.8,1.2,1.6,2.0
+25,0.5,1.0,1.5,2.0,2.5
diff --git a/evaluation_examples/data/origin/test2.csv b/evaluation_examples/data/origin/test2.csv
new file mode 100644
index 0000000..4745e62
--- /dev/null
+++ b/evaluation_examples/data/origin/test2.csv
@@ -0,0 +1,14 @@
+X,Y,Z
+0,0,1.0
+1,0,1.2
+2,0,1.5
+0,1,1.1
+1,1,1.4
+2,1,1.8
+0,2,1.3
+1,2,1.6
+2,2,2.0
+0.5,0.5,1.25
+1.5,0.5,1.45
+0.5,1.5,1.35
+1.5,1.5,1.75
\ No newline at end of file