diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 82d28d51..7f8e2088 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -85,9 +85,9 @@ copy_test_data(gdaswave.t00z.wcoast.0p16.f000.grib2)
 copy_test_data(ref_gdaswave.t00z.wcoast.0p16.f000.grib2.inv)
 copy_test_data(ref_npts_gdaswave.t00z.wcoast.0p16.f000.grib2.txt)
 copy_test_data(ref_WW3_Regional_US_West_Coast_20220718_0000.grib2.inv)
-copy_test_data(gdas.t12z.pgrb2.1p00.anl.75r)
-copy_test_data(ref_wind.gdas.t12z.pgrb2.1p00.anl.75r)
-copy_test_data(ref_uv.gdas.t12z.pgrb2.1p00.anl.75r)
+copy_test_data(gdas.t12z.pgrb2.1p00.anl.75r.grib2)
+copy_test_data(ref_wind.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inv)
+copy_test_data(ref_uv.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inx)
 
 # Run these shell tests.
 shell_test(run_wgrib2_tests)
diff --git a/tests/data/gdas.t12z.pgrb2.1p00.anl.75r b/tests/data/gdas.t12z.pgrb2.1p00.anl.75r
deleted file mode 100644
index 4e264f9d..00000000
Binary files a/tests/data/gdas.t12z.pgrb2.1p00.anl.75r and /dev/null differ
diff --git a/tests/data/ref_uv.gdas.t12z.pgrb2.1p00.anl.75r b/tests/data/ref_uv.gdas.t12z.pgrb2.1p00.anl.75r
deleted file mode 100644
index 7668ec9f..00000000
Binary files a/tests/data/ref_uv.gdas.t12z.pgrb2.1p00.anl.75r and /dev/null differ
diff --git a/tests/data/ref_uv.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inv b/tests/data/ref_uv.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inv
new file mode 100644
index 00000000..f819edc4
--- /dev/null
+++ b/tests/data/ref_uv.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inv
@@ -0,0 +1,14 @@
+1:0:d=2024042612:UGRD:0.01 mb:anl:
+2:89774:d=2024042612:VGRD:0.01 mb:anl:
+3:179548:d=2024042612:UGRD:0.02 mb:anl:
+4:269322:d=2024042612:VGRD:0.02 mb:anl:
+5:359096:d=2024042612:UGRD:0.04 mb:anl:
+6:473305:d=2024042612:VGRD:0.04 mb:anl:
+7:587514:d=2024042612:UGRD:0.07 mb:anl:
+8:701723:d=2024042612:VGRD:0.07 mb:anl:
+9:815932:d=2024042612:UGRD:0.1 mb:anl:
+10:905706:d=2024042612:VGRD:0.1 mb:anl:
+11:995480:d=2024042612:UGRD:0.2 mb:anl:
+12:1109689:d=2024042612:VGRD:0.2 mb:anl:
+13:1223898:d=2024042612:UGRD:0.4 mb:anl:
+14:1338107:d=2024042612:VGRD:0.4 mb:anl:
diff --git a/tests/data/ref_wind.gdas.t12z.pgrb2.1p00.anl.75r b/tests/data/ref_wind.gdas.t12z.pgrb2.1p00.anl.75r
deleted file mode 100644
index 55858422..00000000
Binary files a/tests/data/ref_wind.gdas.t12z.pgrb2.1p00.anl.75r and /dev/null differ
diff --git a/tests/data/ref_wind.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inv b/tests/data/ref_wind.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inv
new file mode 100644
index 00000000..73b6bb79
--- /dev/null
+++ b/tests/data/ref_wind.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inv
@@ -0,0 +1,14 @@
+1:0:d=2024042612:WDIR:0.01 mb:anl:
+2:73484:d=2024042612:WIND:0.01 mb:anl:
+3:163258:d=2024042612:WDIR:0.02 mb:anl:
+4:236742:d=2024042612:WIND:0.02 mb:anl:
+5:326516:d=2024042612:WDIR:0.04 mb:anl:
+6:400000:d=2024042612:WIND:0.04 mb:anl:
+7:514209:d=2024042612:WDIR:0.07 mb:anl:
+8:587693:d=2024042612:WIND:0.07 mb:anl:
+9:701902:d=2024042612:WDIR:0.1 mb:anl:
+10:775386:d=2024042612:WIND:0.1 mb:anl:
+11:865160:d=2024042612:WDIR:0.2 mb:anl:
+12:938644:d=2024042612:WIND:0.2 mb:anl:
+13:1052853:d=2024042612:WDIR:0.4 mb:anl:
+14:1126337:d=2024042612:WIND:0.4 mb:anl:
diff --git a/tests/run_wgrib2_tests.sh b/tests/run_wgrib2_tests.sh
index 1ae28b15..b022279d 100755
--- a/tests/run_wgrib2_tests.sh
+++ b/tests/run_wgrib2_tests.sh
@@ -25,20 +25,14 @@ cat npts.txt
 cmp npts.txt data/ref_npts_gdaswave.t00z.wcoast.0p16.f000.grib2.txt
 
 # Tests the calculation of wind speed, direction, and UGRD & VGRD components
-cksum_wind_0=`../wgrib2/wgrib2 data/ref_wind.gdas.t12z.pgrb2.1p00.anl.75r -text - | cksum`
-cksum_uv_0=`../wgrib2/wgrib2 data/ref_uv.gdas.t12z.pgrb2.1p00.anl.75r -text - | cksum`
-../wgrib2/wgrib2 data/gdas.t12z.pgrb2.1p00.anl.75r -wind_dir wind.grb -wind_speed wind.grb -match "(UGRD|VGRD)"
-cksum_wind_1=`../wgrib2/wgrib2 wind.grb -text - | cksum`
-if [ "$cksum_wind_0" != "$cksum_wind_1" ] ; then
-    echo "failed for computing wind speed and direction"
-    exit 1
-fi
+../wgrib2/wgrib2 data/gdas.t12z.pgrb2.1p00.anl.75r.grib2 -wind_dir wind.grb -wind_speed wind.grb -match "(UGRD|VGRD)"
+../wgrib2/wgrib2 wind.grb > wind.txt
+cat wind.txt
+cmp wind.txt data/ref_wind.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inv
 ../wgrib2/wgrib2 wind.grb -wind_uv uv.grb
-cksum_uv_1=`../wgrib2/wgrib2 uv.grb -text - | cksum`
-if [ "$cksum_uv_0" != "$cksum_uv_1" ] ; then
-    echo "failed for computing UGRD & VGRD components"
-    exit 1
-fi
+../wgrib2/wgrib2 uv.grb > uv.txt
+cat uv.txt
+cmp uv.txt data/ref_uv.gdas.t12z.pgrb2.1p00.anl.75r.grib2.inv
 
 echo "*** SUCCESS!"
 exit 0