C. A. Skeie, N. Østgaard, I. Bjørge-Engeland, A. Mezentsev, T. Neubert, V. Reglero, M. Marisaldi, P. Kochkin, N. G. Lehtinen, D. Sarria, C. Maiorana, A. Lindanger, F. Christiansen, K. Ullaland, G. Genov, Assessing the relationship between the TGF durations and the onset times of the TGFs and the main optical pulses as detected by ASIM, EGU General Assembly, Vienna, Austria, 4-9 May, 2020