1. Run a test: import mdf_reader import matplotlib.pyplot as plt data = mdf_reader.tests.read_imma1_buoys_nosupp() data = mdf_reader.tests.read_imma1_buoys_supp() ax = data[section_name][field_name].plot(label='x') data[section_name][field_name].plot(ax = ax ,label='y') plt.show() 2. Read imma data imma_data = mdf_reader.read(filepath, data_model = 'imma1',sections = ['core','c1','c98'])