diff --git a/.gitattributes b/.gitattributes
index 56c11195..d167fafd 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -2,3 +2,5 @@ code/poli3.npz filter=lfs diff=lfs merge=lfs -text
 code/nemeth12.npz filter=lfs diff=lfs merge=lfs -text
 code/spd_5000.npz filter=lfs diff=lfs merge=lfs -text
 code/spd_10000.npz filter=lfs diff=lfs merge=lfs -text
+code/nemeth12_1.npz filter=lfs diff=lfs merge=lfs -text
+code/nemeth12_2.npz filter=lfs diff=lfs merge=lfs -text
diff --git a/split_nemeth.py b/split_nemeth.py
new file mode 100644
index 00000000..e7d28a1b
--- /dev/null
+++ b/split_nemeth.py
@@ -0,0 +1,17 @@
+import numpy as np
+
+# Load the .npz file
+input_file = 'code/nemeth12.npz'
+data = np.load(input_file)
+
+# Create dictionaries to hold the split data
+data_keys = list(data.keys())
+split_point = len(data_keys) // 2
+first_half = {key: data[key] for key in data_keys[:split_point]}
+second_half = {key: data[key] for key in data_keys[split_point:]}
+
+# Save the halves to separate .npz files
+np.savez('nemeth12_1.npz', **first_half)
+np.savez('nemeth12_2.npz', **second_half)
+
+print(f"Data split into 'nemeth12_1.npz' and 'nemeth12_2.npz'")