diff --git a/example_data/README.md b/example_data/README.md
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+# Example Data
+
+These are a few files for easy access. Please see [https://data.boulder.swri.edu/mhughes/punch_synthetic_data/](https://data.boulder.swri.edu/mhughes/punch_synthetic_data/) for additional sytnhetic data. Files are described in the [overall README](../README.md).
diff --git a/example_movies/L2_NQP_TB_diff.mp4 b/example_movies/L2_NQP_TB_diff.mp4
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diff --git a/example_movies/L2_WQP_TB_diff.mp4 b/example_movies/L2_WQP_TB_diff.mp4
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diff --git a/example_movies/L3_PAM_polarized.mp4 b/example_movies/L3_PAM_polarized.mp4
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diff --git a/example_movies/L3_PAM_total.mp4 b/example_movies/L3_PAM_total.mp4
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diff --git a/example_movies/L3_PAN_polarized.mp4 b/example_movies/L3_PAN_polarized.mp4
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diff --git a/example_movies/L3_PAN_total.mp4 b/example_movies/L3_PAN_total.mp4
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diff --git a/example_movies/L3_PNN_polarized.mp4 b/example_movies/L3_PNN_polarized.mp4
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diff --git a/example_movies/L3_PTM_polarized.mp4 b/example_movies/L3_PTM_polarized.mp4
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diff --git a/example_movies/L3_PTM_total.mp4 b/example_movies/L3_PTM_total.mp4
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diff --git a/example_movies/README.md b/example_movies/README.md
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+# Example movies
+
+This folder includes some example animations of the data.
+Each file name begins with "L2" for level 2 or "L3" for level 3.
+Then, there is a product code.
+For example, "NQP" means NFI Quick PUNCH and "PTM" means polarized trefoil mosaic.
+Animations marked "TB" or "total" are total brightness.
+Animations marked "polarized" are the pB images.
+Finally, those marked "diff" are running difference movies.