Broadband multi-wavelength properties of M87 during the 2018 EHT campaign including a very high energy flaring episode

H.E.S.S. Collaboration, The Event Horizon Telescope Collaboration, The Fermi Large Area Telescope Collaboration, MAGIC Collaboration, VERITAS Collaboration, EAVN Collaboration, J. C. Algaba, M. Baloković, S. Chandra, W. -Y. Cheong, Y. -Z. Cui, F. D'Ammando, A. D. Falcone, Jann Aschersleben, R. Hesper, Manuela Vecchi