diff --git a/tests/data/atmosphere/transmittance_great.csv b/tests/data/atmosphere/transmittance_great.csv
new file mode 100644
index 0000000..4bbb6a6
--- /dev/null
+++ b/tests/data/atmosphere/transmittance_great.csv
@@ -0,0 +1,11 @@
+wavelength [um],transmittance []
+157.70,0.86
+157.71,0.86
+157.72,0.86
+157.73,0.86
+157.74,0.86
+157.75,0.86
+157.76,0.86
+157.77,0.86
+157.78,0.86
+157.79,0.86
\ No newline at end of file
diff --git a/tests/data/mirror/reflectance_great.csv b/tests/data/mirror/reflectance_great.csv
new file mode 100644
index 0000000..bcb63b2
--- /dev/null
+++ b/tests/data/mirror/reflectance_great.csv
@@ -0,0 +1,11 @@
+wavelength [um],transmittance []
+157.70,0.92
+157.71,0.92
+157.72,0.92
+157.73,0.92
+157.74,0.92
+157.75,0.92
+157.76,0.92
+157.77,0.92
+157.78,0.92
+157.79,0.92
\ No newline at end of file
diff --git a/tests/data/target/line.csv b/tests/data/target/line.csv
new file mode 100644
index 0000000..cdde90d
--- /dev/null
+++ b/tests/data/target/line.csv
@@ -0,0 +1,11 @@
+Wavelength [um]	Spectral flux density [W/(m^2*nm)]
+157.7	6.2720E-17
+157.71	6.2712E-17
+157.72	6.2704E-17
+157.73	6.2696E-17
+157.74	6.2688E-17
+157.75	6.2680E-17
+157.76	6.2672E-17
+157.77	6.2664E-17
+157.78	6.2657E-17
+157.79	6.2649E-17