Update README.md

README.md

@@ -233,12 +233,20 @@ SaganMC is named in honor of Carl Sagan, the astronomer and science communicator
 
 ## Available Files
 
+### CSV
+
+The original dataset in CSV format can be found in the [script](https://huggingface.co/datasets/oxai4science/sagan-mc/tree/script) branch.
+
 * **SaganMC-400k** (`sagan-mc-400k.csv`): The full dataset  with 406,446 molecules, including structural and complexity features.
 * **SaganMC-Spectra-16k** (`sagan-mc-spectra-16k.csv`): A 16,653-molecule subset of the full dataset, with experimental mass spectra from NIST.
 
+### Parquet
+
+The `main` branch contains a version of the dataset that was auto-converted to Parquet from the original CSV files.
+
 ## Dataset Structure
 
-Each CSV file includes 36 columns describing various molecular attributes. A `split` column assigns rows into `train`, `val`, or `test` splits (80/10/10). All data is in CSV format, with string, float, or integer fields.
+The data includes 36 columns. A `split` column assigns rows into `train`, `val`, or `test` splits (80/10/10).
 
 ### Features