Update parquet files

gaussian0.4_grid128/test/0000.parquet

@@ -1,3 +1,3 @@
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-size 79059655
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+size 634

gaussian0.4_grid128/train/0000.parquet

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:414cda92c5113fa683fdcde3baa0f90698d48749c4426f5f83f81ceb2a22abaa
-size 395291755
+oid sha256:48bc95e55dd2b2eb1f2dd79d815395a143710b785141d7840b304e8a55f1e1cc
+size 634