diff --git a/testinput_tier_1/obs/amsua_n19_tlapmean.txt b/testinput_tier_1/obs/amsua_n19_tlapmean.txt
new file mode 100644
index 00000000..5a8d5b43
--- /dev/null
+++ b/testinput_tier_1/obs/amsua_n19_tlapmean.txt
@@ -0,0 +1,15 @@
+amsua_n19 1 0.431869E+00
+amsua_n19 2 0.238203E+00
+amsua_n19 3 0.149976E+01
+amsua_n19 4 0.335676E+01
+amsua_n19 5 0.439618E+01
+amsua_n19 6 0.486580E+01
+amsua_n19 7 0.401280E+01
+amsua_n19 8 0.285799E+01
+amsua_n19 9 -0.855057E+00
+amsua_n19 10 -0.244166E+01
+amsua_n19 11 -0.367322E+01
+amsua_n19 12 -0.541512E+01
+amsua_n19 13 -0.709678E+01
+amsua_n19 14 -0.556014E+01
+amsua_n19 15 0.705510E+00
diff --git a/testinput_tier_1/obs/satbias_amsua_n19.nc4 b/testinput_tier_1/obs/satbias_amsua_n19.nc4
new file mode 100644
index 00000000..418da326
--- /dev/null
+++ b/testinput_tier_1/obs/satbias_amsua_n19.nc4
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0f913daf1698536dad23585f510702994ae9168672d57ce57788b3c01b9c76e9
+size 9528