1. Centre for Fusion, Space and Astrophysics, Physics Department University of Warwick Coventry UK
2. National Center for Atmospheric Research Boulder CO USA
3. Department of Astronomy University of Maryland College Park MD USA
4. NASA Goddard Space Flight Center, Code 672 Greenbelt MD USA
5. Centre for the Analysis of Time Series London School of Economics and Political Science London UK
6. Faculty of Science, Technology, Engineering and Mathematics The Open University Milton Keynes UK