diff --git a/em27_metadata/loader.py b/em27_metadata/loader.py
index 2b38623..b920afd 100644
--- a/em27_metadata/loader.py
+++ b/em27_metadata/loader.py
@@ -129,14 +129,10 @@ def load_from_local_files(
 
 
 def load_from_example_data() -> em27_metadata.interfaces.EM27MetadataInterface:
-    _PACKAGE_DIR = os.path.dirname(os.path.abspath(__file__))
+    _PROJECT_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
     return load_from_local_files(
-        locations_path=os.path.join(
-            _PACKAGE_DIR, "sample-data", "locations.json"
-        ),
-        sensors_path=os.path.join(_PACKAGE_DIR, "sample-data", "sensors.json"),
-        campaigns_path=os.path.join(
-            _PACKAGE_DIR, "sample-data", "campaigns.json"
-        ),
+        locations_path=os.path.join(_PROJECT_DIR, "data", "locations.json"),
+        sensors_path=os.path.join(_PROJECT_DIR, "data", "sensors.json"),
+        campaigns_path=os.path.join(_PROJECT_DIR, "data", "campaigns.json"),
     )
diff --git a/em27_metadata/sample-data/README.md b/em27_metadata/sample-data/README.md
deleted file mode 100644
index aa2f399..0000000
--- a/em27_metadata/sample-data/README.md
+++ /dev/null
@@ -1 +0,0 @@
-This directory contains dummy data used to test the library.
diff --git a/em27_metadata/sample-data/campaigns.json b/em27_metadata/sample-data/campaigns.json
deleted file mode 100644
index a2bd3f7..0000000
--- a/em27_metadata/sample-data/campaigns.json
+++ /dev/null
@@ -1,9 +0,0 @@
-[
-  {
-    "campaign_id": "cid1",
-    "from_datetime": "2019-09-13T00:00:00+0000",
-    "to_datetime": "2100-01-01T23:59:59+0000",
-    "sensor_ids": ["sid1", "sid2"],
-    "location_ids": ["lid1", "lid2"]
-  }
-]
diff --git a/em27_metadata/sample-data/locations.json b/em27_metadata/sample-data/locations.json
deleted file mode 100644
index 6a0195a..0000000
--- a/em27_metadata/sample-data/locations.json
+++ /dev/null
@@ -1,16 +0,0 @@
-[
-  {
-    "location_id": "lid1",
-    "details": "description of location 1",
-    "lon": 10.5,
-    "lat": 48.1,
-    "alt": 500
-  },
-  {
-    "location_id": "lid2",
-    "details": "description of location 2",
-    "lon": 11.3,
-    "lat": 48.0,
-    "alt": 600
-  }
-]
diff --git a/em27_metadata/sample-data/sensors.json b/em27_metadata/sample-data/sensors.json
deleted file mode 100644
index e35e53b..0000000
--- a/em27_metadata/sample-data/sensors.json
+++ /dev/null
@@ -1,50 +0,0 @@
-[
-  {
-    "sensor_id": "sid1",
-    "serial_number": 50,
-    "setups": [
-      {
-        "from_datetime": "2020-08-22T00:00:00+0000",
-        "to_datetime": "2020-08-25T23:59:59+0000",
-        "value": {
-          "location_id": "lid1",
-          "pressure_data_source": "LMU-MIM01-height-adjusted",
-          "atmospheric_profile_location_id": "lid2",
-          "utc_offset": 2
-        }
-      },
-      {
-        "from_datetime": "2020-08-26T00:00:00+0000",
-        "to_datetime": "2020-08-30T23:59:59+0000",
-        "value": {
-          "location_id": "lid1",
-          "pressure_data_source": "LMU-MIM01-height-adjusted",
-          "utc_offset": 2
-        }
-      },
-      {
-        "from_datetime": "2020-08-31T00:00:00+0000",
-        "to_datetime": "2020-09-26T23:59:59+0000",
-        "value": { "location_id": "lid1", "utc_offset": 2 }
-      },
-      {
-        "from_datetime": "2020-09-27T00:00:00+0000",
-        "to_datetime": "2020-10-01T23:59:59+0000",
-        "value": { "location_id": "lid2" }
-      }
-    ]
-  },
-  {
-    "sensor_id": "sid2",
-    "serial_number": 51,
-    "setups": [
-      {
-        "from_datetime": "2020-08-26T00:00:00+0000",
-        "to_datetime": "2020-10-01T23:59:59+0000",
-        "value": {
-          "location_id": "lid1"
-        }
-      }
-    ]
-  }
-]
diff --git a/tests/test_loaders.py b/tests/test_loaders.py
index 31d77dc..a71be6f 100644
--- a/tests/test_loaders.py
+++ b/tests/test_loaders.py
@@ -27,13 +27,7 @@ def test_remote_loader_private_repo() -> None:
 @pytest.mark.library
 def test_local_loader() -> None:
     em27_metadata.load_from_local_files(
-        locations_path=os.path.join(
-            PROJECT_DIR, "em27_metadata", "sample-data", "locations.json"
-        ),
-        sensors_path=os.path.join(
-            PROJECT_DIR, "em27_metadata", "sample-data", "sensors.json"
-        ),
-        campaigns_path=os.path.join(
-            PROJECT_DIR, "em27_metadata", "sample-data", "campaigns.json"
-        ),
+        locations_path=os.path.join(PROJECT_DIR, "data", "locations.json"),
+        sensors_path=os.path.join(PROJECT_DIR, "data", "sensors.json"),
+        campaigns_path=os.path.join(PROJECT_DIR, "data", "campaigns.json"),
     )