1. School of Physics and Astronomy, University of Southampton, Southampton, SO17 1BJ, UK
2. Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, UK
3. Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE, UK
4. Departamento de Astrofisica y Ciencias de la Atmosfera, Universidad Complutense de Madrid, E-28040 Madrid, Spain
5. Instituto de Astrofisica de Canarias, Via Lactea S/N, E-38205, La Laguna, Tenerife, Spain
6. Departamento de Astrofisica, Universidad de La Laguna, E-38206, La Laguna, Tenerife, Spain
7. Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, UK
8. Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, 43992 Onsala, Sweden
9. Instituto de Astrofisica de Andalucía (IAA, CSIC); Glorieta de la Astronomía s/n, 18008-Granada, Spain
10. ALMA Regional Centre Node, UK
11. Laboratoire AIM (CEA/IRFU – CNRS/INSU – Université Paris Diderot), CEA DSM/IRFU/SAp, F-91191 Gif-sur-Yvette, France
12. Station de Radioastronomie de Nançay, Observatoire de Paris, PSL Research University, CNRS, Univ. Orléans, 18330 Nançay, France
13. School of Physics and Astronomy, Cardiff University, Cardiff, CF243AA, UK
14. Department of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UK
15. Astrophysics Group, Cavendish Laboratory, 19 J. J. Thomson Avenue, Cambridge CB3 0HE, UK
16. Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
17. Department of Astrophysics/IMAPP Radboud University, Nijmegen, The Netherlands
18. National Centre for Radio Astrophysics – Tata Institute of Fundamental Research, Postbag 3, Ganeshkhind, Pune 411007, India
19. Department of Physics, Box 41051, Science Building, Texas Tech University, Lubbock, TX 79409-1051, USA
20. Department of Physics, University of Bath, Claverton Down, Bath, BA2 7AY, UK
21. INAF – IAPS Rome, Via Fosso del Cavaliere 100, I-00133 Roma, Italy
22. Gemini North Operations Center, 670 N. A'ohoku Pl, Hilo, HI 96720, USA
23. New York University Abu Dhabi, PO Box 129188, Abu Dhabi, UAE
24. School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
25. Anton Pannekoek Institute, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands