1. Statistics Section, Department of Mathematics, Imperial College London, London SW7 2AZ, UK
2. Physical Sciences Department, Embry-Riddle Aeronautical University, Daytona Beach, 32114-3900, FL, USA
3. Institute of Astronomy, Madingley Road, Cambridge CB3 OHA, UK
4. Argiope Technical Solutions, Gainesville, 32601, FL, USA
5. Physics Department, California Polytechnic State University, San Luis Obispo, 93407, CA, USA