diff --git a/examples/write_csv_example.py b/examples/write_csv_example.py
deleted file mode 100644
index 892e1c6..0000000
--- a/examples/write_csv_example.py
+++ /dev/null
@@ -1,27 +0,0 @@
-"""This script demonstrates writing an analog waveform to a CSV file."""
-
-import os
-import shutil
-
-import numpy as np
-
-from tm_data_types import AnalogWaveform, AnalogWaveformMetaInfo
-from tm_data_types.files_and_formats.csv.data_formats.analog import WaveformFileCSVAnalog
-
-if __name__ == "__main__":
-    WAVEFORM_DIR = "example_waveforms"
-    if os.path.exists(os.path.join(os.getcwd(), WAVEFORM_DIR)):
-        shutil.rmtree(WAVEFORM_DIR)
-    os.mkdir(WAVEFORM_DIR)
-
-    values = np.array([10, 11, 12, 32222, 32223, 32224, 55, 56, 57], dtype=np.int16)
-    analog_meta_info = AnalogWaveformMetaInfo()
-    waveform = AnalogWaveform()
-    waveform.meta_info = analog_meta_info
-    waveform.y_axis_values = values
-    waveform.y_axis_extent_magnitude = 1.0
-    waveform.y_axis_offset = 0.1
-    file_path = f"{os.getcwd()}\\{WAVEFORM_DIR}\\write_example_serial.csv"
-
-    with WaveformFileCSVAnalog(file_path, "w") as fd:
-        fd.write_datum(waveform)
diff --git a/examples/write_file.py b/examples/write_file.py
deleted file mode 100644
index d0d3b35..0000000
--- a/examples/write_file.py
+++ /dev/null
@@ -1,45 +0,0 @@
-"""An example of how to read and write using the tm_data_types module."""
-
-import os
-import shutil
-
-import numpy as np
-
-from tm_data_types import (
-    AnalogWaveform,
-    AnalogWaveformMetaInfo,
-    write_file,
-    write_files_in_parallel,
-)
-
-if __name__ == "__main__":
-    WAVEFORM_DIR = "example_waveforms"
-    if os.path.exists(os.path.join(os.getcwd(), WAVEFORM_DIR)):
-        shutil.rmtree(WAVEFORM_DIR)
-    os.mkdir(WAVEFORM_DIR)
-
-    values_1 = np.array([10, 11, 12, 32222, 32223, 32224, 55, 56, 57], dtype=np.int16)
-    analog_meta_info_1 = AnalogWaveformMetaInfo()
-    waveform_1 = AnalogWaveform()
-    waveform_1.meta_info = analog_meta_info_1
-    waveform_1.y_axis_values = values_1
-    waveform_1.y_axis_extent_magnitude = 1.0
-    waveform_1.y_axis_offset = 0.1
-    file_path_1 = f"{os.getcwd()}\\{WAVEFORM_DIR}\\write_example_serial.wfm"
-
-    write_file(file_path_1, waveform_1)
-
-    values_2 = np.array([15, 16, 17, -10000, -10001, -10002, 156, 157, 158], dtype=np.int16)
-    analog_meta_info_2 = AnalogWaveformMetaInfo()
-    waveform_2 = AnalogWaveform()
-    waveform_2.meta_info = analog_meta_info_2
-    waveform_2.y_axis_values = values_2
-    waveform_2.y_axis_extent_magnitude = 1.0
-    waveform_2.y_axis_offset = 0.1
-    file_path_2 = f"{os.getcwd()}\\{WAVEFORM_DIR}\\write_example_parallel_1.wfm"
-    file_path_3 = f"{os.getcwd()}\\{WAVEFORM_DIR}\\write_example_parallel_2.wfm"
-
-    waveform_list = [waveform_1, waveform_2]
-    file_path_list = [file_path_2, file_path_3]
-
-    write_files_in_parallel(file_path_list, waveform_list)
diff --git a/src/tm_data_types/files_and_formats/mat/mat.py b/src/tm_data_types/files_and_formats/mat/mat.py
index 2d9e76a..6770d27 100644
--- a/src/tm_data_types/files_and_formats/mat/mat.py
+++ b/src/tm_data_types/files_and_formats/mat/mat.py
@@ -63,12 +63,12 @@ class MATFile(AbstractedFile, Generic[DATUM_TYPE_VAR]):
         14: Matrix,
         16: String,
     }
-
+#wfm prop
     _WAVEFORM_PROPERTIES = bidict(
         {
             "source_name": "waveformSource",
-            "y_axis_units": "horizontalUnits",
-            "x_axis_units": "verticalUnits",
+            "y_axis_units": "verticalUnits",  # FIXED: was 'horizontalUnits'
+            "x_axis_units": "horizontalUnits",  # FIXED: was 'verticalUnits'
             "trigger_index": "zeroIndex",
             "x_axis_spacing": "sampleInterval",
         },