diff --git a/code/reproduction/inter_run_diagnostics.py b/code/reproduction/inter_run_diagnostics.py
new file mode 100644
index 0000000..f67e490
--- /dev/null
+++ b/code/reproduction/inter_run_diagnostics.py
@@ -0,0 +1,33 @@
+from __future__ import print_function
+from __future__ import division
+import numpy as np
+import sys
+import matplotlib.pyplot as plt
+import gc
+
+REPO_HOME_RELATIVE_PATH = '../../'
+sys.path.append(REPO_HOME_RELATIVE_PATH)
+
+
+def calc_vol_rms_diff(data_file_path):
+    data = np.load(open(data_file_path))
+    diff_data = np.diff(data, axis=1)
+    del data
+    gc.collect()
+    vol_rms_diff = np.sqrt(np.mean(diff_data**2, axis=0))
+    return vol_rms_diff[9:]
+
+
+def save_plot(vol_rms_diff, subj_num):
+    plt.plot(vol_rms_diff)
+    plt.savefig('{0}figures/subj{1}_vol_rms_diff.png'.format(
+        REPO_HOME_RELATIVE_PATH, subj_num))
+
+
+if __name__ == '__main__':
+    subj_num = sys.argv[1]
+    data_file_path = '{0}data/processed/sub{1}_rcds_2d.npy'.format(
+        REPO_HOME_RELATIVE_PATH, subj_num)
+    vol_rms_diff = calc_vol_rms_diff(data_file_path)
+    save_plot(vol_rms_diff, subj_num)
+    del vol_rms_diff
diff --git a/figures/.gitignore b/figures/.gitignore
new file mode 100644
index 0000000..aab52d9
--- /dev/null
+++ b/figures/.gitignore
@@ -0,0 +1 @@
+*.png
\ No newline at end of file