[30] J. Engert and A. Kirste, "MeP-K Low-temperature Johnson noise thermometry," 2019, Open Access. [Online]. Available: https://www.bipm.org/utils/en/pdf/si-mep/MeP-K-2019LT_Johnson_Noise_Thermometry.pdf. Richard Davis (richard.davis@ieee.org) joined the International Bureau of Weights and Measures (BIPM) in 1990 following eighteen years at NIST in Gaithersburg, Maryland. He began at NIST as a post-doctoral fellow in the electrical standards group. Later, he had technical responsibility for dissemination of the unit of mass from the United States' national prototype of the kilogram. At the BIPM, he worked in the mass 20 department until he retired in 2010 as department head. He continued as a consultant to the BIPM Director until June 2019. Richard is a Life Member of IEEE and a Fellow of the American Physical Society. Stephan Schlamminger (stephan.schlamminger@nist.gov) is a Physicist at the National Institute of Standards and Technology in Gaithersburg, Maryland. He received a diploma in physics from the University of Regensburg, Germany and the Ph.D. degree in experimental physics from the University of Zurich, Switzerland. His research interests include precise measurements using mechanical and electrical apparatus. IEEE Instrumentation & Measurement Magazine May 2020https://www.bipm.org/utils/en/pdf/si-mep/MeP-K-2019-LT_Johnson_Noise_Thermometry.pdf https://www.bipm.org/utils/en/pdf/si-mep/MeP-K-2019-LT_Johnson_Noise_Thermometry.pdf