1. University of Florida, Gainesville, Florida 32611, USA
2. Louisiana State University, Baton Rouge, Louisiana 70803, USA
3. LIGO Livingston Observatory, Livingston, Louisiana 70754, USA
4. LIGO Hanford Observatory, Richland, Washington 99352, USA
5. University of Adelaide, Adelaide, SA 5005, Australia
6. LIGO, California Institute of Technology, Pasadena, California 91125, USA
7. Max-Planck-Institut für Gravitationsphysik, 30167 Hannover, Germany
8. University of Texas at Brownsville, Brownsville, Texas 78520, USA