# Data The matrices for 3 target structures (to synthesize) and a database of 7165 query structures (to combine to build the target) are compressed in `data.npz` Within python, it can be read like: ``` data = np.load("data.npz", allow_pickle=True) ``` where `data.files` will return the names of the numpy arrays (should be `target_labels, target_CMs, target_ncharges, database_labels, database_CMs, database_ncharges`) where CMs are the matrices (of target and database respectively) and the corresponding arrays can be accessed like: ``` data["target_labels"] ``` For more details see the documentation: https://het.as.utexas.edu/HET/Software/Numpy/reference/generated/numpy.savez.html