Koymans, M., Assink, J., de Zeeuw-van Dalfsen, E. and Evers, L. 2023. Passive Assessment of Geophysical Instruments Performance using Electrical Network Frequency Analysis. Seismica. 2, 2 (Dec. 2023). DOI:https://doi.org/10.26443/seismica.v2i2.1082.