def METHOD_NAME(data):
    if len(data) == 0:
        return
    _data = {}
    for key, value in data.items():
        _data[key] = pd.read_csv(StringIO(value))
    merged_df = pd.concat([df.assign(key=key) for key, df in _data.items()])
    col = merged_df.pop("key")
    if "Unnamed: 0" in merged_df.columns:
        merged_df.drop("Unnamed: 0", axis=1, inplace=True)
    merged_df.insert(0, "System", col)
    print(merged_df.to_string(index=False, justify="left"))